# Basic Geometry: Help & Review

• Course type: Self-paced
• Available Lessons: 107
• Average Lesson Length: 8 min
• Eligible for Certificate: Yes

Certificates show that you have completed the course. They do not provide credit.

• Watch a preview:

chapter 1 / lesson 1
What is Geometry?

### Course Summary

Improve your knowledge of basic geometry with this help and review course. These lessons can help you quickly review math material help you prepare for class, study for an exam or finish a homework assignment.
Create An Account
To Start This Course Today
Used by over 10 million students worldwide
16 Chapters in Basic Geometry: Help & Review

#### 16 chapters in Basic Geometry: Help & Review

Ch 1. Introduction to Basic Geometry {{cp.topicAssetIdToProgress[44913].percentComplete}}% complete
Course Progress Best Score
Lesson 1 - What is Geometry? Score: {{cp.lessonAssetIdToProgress[14510].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14510].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Inductive & Deductive Reasoning in Geometry: Definition & Uses Score: {{cp.lessonAssetIdToProgress[14511].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14511].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Properties and Postulates of Geometric Figures Score: {{cp.lessonAssetIdToProgress[14516].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14516].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Algebraic Laws and Geometric Postulates Score: {{cp.lessonAssetIdToProgress[14517].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14517].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Direct Proofs: Definition and Applications Score: {{cp.lessonAssetIdToProgress[14896].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14896].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Geometric Proofs: Definition and Format Score: {{cp.lessonAssetIdToProgress[14897].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14897].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - How to Create a Coordinate Plane Score: {{cp.lessonAssetIdToProgress[252809].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[252809].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - How to Find Area from Diameter Score: {{cp.lessonAssetIdToProgress[252819].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[252819].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - How to Find the Distance between Two Planes Score: {{cp.lessonAssetIdToProgress[252851].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[252851].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Brahmagupta's Formula: Proof & Examples Score: {{cp.lessonAssetIdToProgress[388575].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[388575].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Brocard Diameter: Definition & Formula Score: {{cp.lessonAssetIdToProgress[388579].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[388579].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Butterfly Theorem: History & Applications Score: {{cp.lessonAssetIdToProgress[388581].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[388581].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - Cardioid in Math: Definition, Equation & Examples Score: {{cp.lessonAssetIdToProgress[388593].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[388593].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - How to Plot Cassini Ovals Score: {{cp.lessonAssetIdToProgress[388597].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[388597].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Points, Lines & Angles in Geometry Score: {{cp.lessonAssetIdToProgress[20052].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20052].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Overview of the Basic Shapes in Geometry Score: {{cp.lessonAssetIdToProgress[20053].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20053].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Vertical Angles & Complementary Angles: Definition & Examples Score: {{cp.lessonAssetIdToProgress[20054].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20054].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Overview of Three-dimensional Shapes in Geometry Score: {{cp.lessonAssetIdToProgress[20055].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20055].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - How to Find Surface Area of a Cube and a Rectangular Prism Score: {{cp.lessonAssetIdToProgress[20068].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20068].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - How to Find Surface Area of a Cylinder Score: {{cp.lessonAssetIdToProgress[20069].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20069].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - How to Find Surface Area of a Pyramid Score: {{cp.lessonAssetIdToProgress[20070].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20070].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Combined Figures: Perimeter, Area, and Volume Score: {{cp.lessonAssetIdToProgress[20056].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20056].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Triangles: Definition and Properties Score: {{cp.lessonAssetIdToProgress[14338].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14338].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Classifying Triangles by Angles and Sides Score: {{cp.lessonAssetIdToProgress[14339].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14339].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Properties of Right Triangles: Theorems & Proofs Score: {{cp.lessonAssetIdToProgress[14101].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14101].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Interior and Exterior Angles of Triangles: Definition & Examples Score: {{cp.lessonAssetIdToProgress[14340].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14340].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Measuring the Angles of Triangles: 180 Degrees Score: {{cp.lessonAssetIdToProgress[13681].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13681].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Median, Altitude, and Angle Bisectors of a Triangle Score: {{cp.lessonAssetIdToProgress[14342].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14342].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Triangle Congruence Postulates: SAS, ASA & SSS Score: {{cp.lessonAssetIdToProgress[14433].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14433].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - The AAS (Angle-Angle-Side) Theorem: Proof and Examples Score: {{cp.lessonAssetIdToProgress[14436].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14436].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Geometric Constructions Using Lines and Angles Score: {{cp.lessonAssetIdToProgress[14012].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14012].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Line Segment Bisection & Midpoint Theorem: Geometric Construction Score: {{cp.lessonAssetIdToProgress[14013].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14013].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Constructing a Parallel Line Using a Point Not on the Given Line Score: {{cp.lessonAssetIdToProgress[13754].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13754].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Constructing Perpendicular Lines in Geometry Score: {{cp.lessonAssetIdToProgress[14014].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14014].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Constructing an Angle Bisector in Geometry Score: {{cp.lessonAssetIdToProgress[14015].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14015].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Constructing the Median of a Triangle Score: {{cp.lessonAssetIdToProgress[14341].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14341].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Constructing Triangles: Types of Geometric Construction Score: {{cp.lessonAssetIdToProgress[14343].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14343].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Finding the Perimeter of Polygons Score: {{cp.lessonAssetIdToProgress[13753].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13753].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Area of Triangles and Rectangles Score: {{cp.lessonAssetIdToProgress[2402].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2402].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Measuring the Area of a Parallelogram: Formula & Examples Score: {{cp.lessonAssetIdToProgress[13445].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13445].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Measuring the Area of a Rhombus: Formula & Examples Score: {{cp.lessonAssetIdToProgress[13447].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13447].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Measuring the Area of a Trapezoid Score: {{cp.lessonAssetIdToProgress[13453].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13453].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Circles: Area and Circumference Score: {{cp.lessonAssetIdToProgress[8563].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[8563].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - What is an Irregular Polygon? - Definition & Shapes Score: {{cp.lessonAssetIdToProgress[152831].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[152831].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - How to Find the Area of Irregular Polygons Score: {{cp.lessonAssetIdToProgress[152833].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[152833].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Planes and the Polyhedron: Definition and Example Score: {{cp.lessonAssetIdToProgress[13831].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13831].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - What Are Platonic Solids? - Definition and Types Score: {{cp.lessonAssetIdToProgress[13832].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13832].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Volume & Surface Area of a Truncated Cone Score: {{cp.lessonAssetIdToProgress[224995].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[224995].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Surface Area of a Triangular Prism Score: {{cp.lessonAssetIdToProgress[224997].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[224997].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Volume & Surface Area of a Trapezoidal Prism Score: {{cp.lessonAssetIdToProgress[225001].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[225001].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Surface Area of a Pentagonal Prism Score: {{cp.lessonAssetIdToProgress[225009].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[225009].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Surface Area of a Tube Score: {{cp.lessonAssetIdToProgress[225011].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[225011].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Volume & Surface Area of a Tetrahedron Score: {{cp.lessonAssetIdToProgress[225017].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[225017].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Mobius Strip: Definition, Explanation & Uses Score: {{cp.lessonAssetIdToProgress[354603].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[354603].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Graph Functions by Plotting Points Score: {{cp.lessonAssetIdToProgress[11293].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[11293].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Identify Where a Function is Linear, Increasing or Decreasing, Positive or Negative Score: {{cp.lessonAssetIdToProgress[11294].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[11294].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Linear Equations: Intercepts, Standard Form and Graphing Score: {{cp.lessonAssetIdToProgress[554].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[554].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - How to Find and Apply The Slope of a Line Score: {{cp.lessonAssetIdToProgress[11295].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[11295].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - How to Find and Apply the Intercepts of a Line Score: {{cp.lessonAssetIdToProgress[11296].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[11296].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Graphing Undefined Slope, Zero Slope and More Score: {{cp.lessonAssetIdToProgress[556].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[556].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Equation of a Line Using Point-Slope Formula Score: {{cp.lessonAssetIdToProgress[164].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[164].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - How to Use The Distance Formula Score: {{cp.lessonAssetIdToProgress[3744].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3744].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - How to Use The Midpoint Formula Score: {{cp.lessonAssetIdToProgress[3743].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3743].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - What is a Parabola? Score: {{cp.lessonAssetIdToProgress[578].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[578].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Parabolas in Standard, Intercept, and Vertex Form Score: {{cp.lessonAssetIdToProgress[579].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[579].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - How to Graph Cubics, Quartics, Quintics and Beyond Score: {{cp.lessonAssetIdToProgress[604].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[604].bestScoreQuestions}}  Take Quiz Optional

### Earning College Credit

Did you know… We have over 95 college courses that prepare you to earn credit by exam that is accepted by over 2,000 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.