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Math for Kids23 chapters | 325 lessons

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Lesson Transcript

Instructor:
*Mark Boster*

Points are important parts of math, and they can be used to label shapes and angles on a plane. Let's explore points a little further and take a look at some examples.

Did you ever play the basketball game HORSE or PIG? You take a shot, and if you make it, the next player has to shoot from the exact same place, or the same *point* on the court. If the player misses, he or she is assigned a letter from the word 'horse' or 'pig'; whoever spells the complete word first loses.

As in a game of HORSE or PIG, a **point** in math is an exact location on a plane, usually marked by a dot. A **plane** is a 2-dimensional, flat surface. Many people think a point is a dot, but it's not -

the dot is simply used to show you the location of a point. Since a point is a location, it has no dimensions - only its position on a plane.

Often, you will see a point marked by not only a dot, but also labeled with a capital letter. Points are also used to mark the ends of lines, where the line segments are named after the points. It can be helpful to name points and line segments. This is especially true when there are more than one of them in the same area.

Points are also used to name shapes and angles. In this image, the points located at the corners of the rectangle are A, B, C, and D, so we'll call it rectangle ABCD.

Angles are also named according to their points. In this image of an angle, the points of the angle are X, Y, and Z, making it angle XYZ.

Try creating your own points on a plane. Start by drawing a shape, like an octagon, hexagon, or square, or just a simple angle. Now, label the points at the corners of your shape or the three points of your angle, and don't forget to label each point with a capital letter.

In math, a **point** is an exact location on a plane. A **plane** is a 2-dimensional, flat surface. A point is usually marked by a dot and a capital letter. Points can be used to name angles and shapes, such as rectangle ABCD or line segment YZ.

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21 in chapter 10 of the course:

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Math for Kids23 chapters | 325 lessons

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