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Ch 28: ACT Math - Triangles: Help and Review

About This Chapter

The ACT Math - Triangles chapter of this ACT Prep: Help and Review course is the simplest way to master triangle configurations. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure you learn the essentials about triangles.

Who's It For?

Anyone who needs help learning or mastering triangle material will benefit from the lessons in this chapter. There is no faster or easier way to learn about triangles. Among those who would benefit are:

  • Students who have fallen behind in understanding the formulas and properties of triangles
  • Students who struggle with learning disabilities or learning differences, including autism and ADHD
  • Students who prefer multiple ways of learning math (visual or auditory)
  • Students who have missed class time and need to catch up
  • Students who need an efficient way to learn about triangles
  • Students who struggle to understand their teachers
  • Students who attend schools without extra math learning resources

How It Works:

  • Find videos in our course that cover what you need to learn or review.
  • Press play and watch the video lesson.
  • Refer to the video transcripts to reinforce your learning.
  • Test your understanding of each lesson with short quizzes.
  • Verify you're ready by completing the ACT Math - Triangles chapter exam.

Why It Works:

  • Study Efficiently: Skip what you know, review what you don't.
  • Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
  • Be Ready on Test Day: Use the ACT Math - Triangles chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any question about triangles. They're here to help!
  • Study With Flexibility: Watch videos on any web-ready device.

Students Will Review:

This chapter helps students review the concepts in a triangles unit of a standard ACT Prep course. Topics covered include:

  • Properties of triangles
  • Determining the perimeter and area of triangles and rectangles
  • Using the Pythagorean Theorem to find distance
  • Identifying and applications of similar triangles
  • Types and properties of special right triangles and 3-4-5 triangles

9 Lessons in Chapter 28: ACT Math - Triangles: Help and Review
Properties of Shapes: Triangles

1. Properties of Shapes: Triangles

Isosceles, equilateral and obtuse, oh my! These are terms for triangles. But, what do they mean? In this lesson, we'll explore the properties of triangles and take a closer look at the different types of triangles you may encounter.

Perimeter of Triangles and Rectangles

2. Perimeter of Triangles and Rectangles

Without realizing it, we calculate and use the perimeter of triangles and rectangles in regular everyday situations. Learn more about the perimeter of triangles and rectangles in this lesson, and test your knowledge with a quiz.

Area of Triangles and Rectangles

3. Area of Triangles and Rectangles

How do you find out the area of rectangles and triangles? Learn how in this lesson! We'll look at the formulas, then practice solving problems for each shape.

Finding Distance with the Pythagorean Theorem

4. Finding Distance with the Pythagorean Theorem

How much faster is it to cut the corners in a race around the block? In this lesson, review the Pythagorean Theorem, and figure out how to solve without a right triangle.

Applications of Similar Triangles

5. Applications of Similar Triangles

Similar triangles are used to solve problems in everyday situations. Learn how to solve with similar triangles here, and then test your understanding with a quiz.

How to Identify Similar Triangles

6. How to Identify Similar Triangles

Similar triangles have the same characteristics as similar figures but can be identified much more easily. Learn the shortcuts for identifying similar triangles here and test your ability with a quiz.

The Pythagorean Theorem: Practice and Application

7. The Pythagorean Theorem: Practice and Application

The Pythagorean theorem is one of the most famous geometric theorems. Written by the Greek mathematician Pythagoras, this theorem makes it possible to find a missing side length of a right triangle. Learn more about the famous theorem here and test your understanding with a quiz.

Special Right Triangles: Types and Properties

8. Special Right Triangles: Types and Properties

Not all right triangles are the same. In this lesson, we'll look at two special right triangles (30-60-90 and 45-45-90) that have unique properties to help you quickly and easily solve certain triangle problems.

Properties of 3-4-5 Triangles: Definition and Uses

9. Properties of 3-4-5 Triangles: Definition and Uses

Are you up to speed on your Pythagorean triples? If you could use a little help with that, watch this lesson to learn what 3-4-5 triangles are, how they're used, and why they're important.

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Other Chapters

Other chapters within the ACT Prep: Help and Review course

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