# Vertex Angles of a Kite: Lesson for Kids

Instructor: Shoshana Yarin

Shoshana has taught all grades with an emphasis in science and has a master's degree in science.

A kite has a special design shape that makes it fly. The vertex angles are a feature of the kite that you'll need to know about if you ever want to make one. Read this lesson to learn more.

## Let's Go Fly a Kite!

Flying a kite is a fun activity, especially if you actually get it flying high! If you picture a kite in your mind, you probably see the typical kite shape, like a diamond. What's so special about this shape? Let's take a look at some important features of the kite shape, especially the vertex angles, and see if we can't get this kite off the ground.

## The Kite Shape

To see the features of the kite it might be important to look at a picture or draw it yourself. The two short sides or the top of the kite are equal in length, and the two long sides are equal in length, but not all four sides are equal. If all four sides were equal, it would be a square. (Have you ever seen a square kite?)

This creates some special angles. An angle is the measure between two lines that meet, and it is measured in degrees. If you think of cutting up a circle into pie pieces (mmm, pie!) the angles between all the pie points in the middle add up to 360 degrees. A square corner (that a kite does NOT have) like one fourth of an entire pie would equal 90 degrees (90 x 4 = 360). Wow, let's get back to kite flying.

Look at the kite shape again. The point where the two short sides meet is a bigger angle than the point where the two long sides meet. This point where two lines meet is called a vertex, and an angle is measured around it. The two opposite points are special because the sides that form them are equal, so they are called the vertex angles. We've got that kite off the ground, now better run with it!

## A Special Kite Feature

Imagine drawing a line from the vertex between the short sides to the vertex between the long sides (or actually draw the line if you drew a kite). In other words, cut the shape in half longwise, or hotdog style, between the vertex angles. Both sides of the kite are symmetrical. Symmetry means if you split something in two, both halves are exactly the same, or are mirror images of each other.

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