# Maths unit B: Angles in shapes

?
• Created by: rvsn
• Created on: 23-11-14 21:59
What do the angles add up to in a triangle?
180 degrees
1 of 6
360 degrees
2 of 6
How do you work out what the interior angles add up to in a polygon?
n=no. of sides, 180(n-2)
3 of 6
What number of degrees do exterior angles add up to in any polygon?
360 degrees
4 of 6
What is an exterior angle?
You extend a side past the shape and it is the angle on one side that is less than 180 degrees
5 of 6
How do you work out how many sides a shape has in a regular polygon when you are given 1 angle?
1. 180-the angle this gives the exterior angle 2. 360/the exterior angle, because exterior angles in a polygon add up to 360 degrees-this gives you the number of sides the polygon has
6 of 6

## Other cards in this set

360 degrees

### Card 3

#### Front

How do you work out what the interior angles add up to in a polygon?

### Card 4

#### Front

What number of degrees do exterior angles add up to in any polygon?

### Card 5

#### Front

What is an exterior angle?