Maths unit B: Angles in shapes

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  • Created by: rvsn
  • Created on: 23-11-14 21:59
What do the angles add up to in a triangle?
180 degrees
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What do the angles add up to in a quadrilateral?
360 degrees
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How do you work out what the interior angles add up to in a polygon?
n=no. of sides, 180(n-2)
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What number of degrees do exterior angles add up to in any polygon?
360 degrees
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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
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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
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Other cards in this set

Card 2

Front

What do the angles add up to in a quadrilateral?

Back

360 degrees

Card 3

Front

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

Back

Preview of the front of card 3

Card 4

Front

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

Back

Preview of the front of card 4

Card 5

Front

What is an exterior angle?

Back

Preview of the front of card 5
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