Common Core Math Vocabulary

# Right Angle - Definition with Examples

## Let's learn!

**What is a right angle?**

In geometry, an angle that measures 90 degrees exactly is a right angle. It is formed by two perpendicular lines.

A right angle is represented by the symbol ∟.

We can find right angles in shapes.

## Let's sing!

*A quarter of a bangle.*

*Its arms don’t dangle,*

*Neither do they tangle,*

*Because it’s a right angle!!*

*You can see it in a right triangle!*

## Let's do it!

Children can stretch out their arms to form right angles. Take the children out for a walk and have them spot right angles formed in things in their surroundings.

The Complete K-5 Math Learning Program Built for Your Child