Polygons Circles And Pythagoras

Question 1

What are the 4 types of ways you can find out angles?

Answer 1

Alternate (Z) angles, corresponding (F) angles, co-interior (C) angles,
Vertically opposite (X) angles

Question 2

How do you find the sum of interior angles of a polygon?

Answer 2

180(number of sides - 2)

Question 3

How do you find an exterior angle of a regular polygon?

Answer 3

360 ÷ number of sides

Question 4

How do you find an exterior angle of a regular polygon?

Answer 4

360 ÷ number of sides

Question 5

What is the radius?

Answer 5

Straight line from middle of circle to any edge

Question 6

What is the diameter?

Answer 6

Straight line from one edge of the circle to another going through the middle

Question 7

What is the circumference?

Answer 7

The distance all the way around a circle

Question 8

How do you find the circumference of a circle?

Answer 8

πd or 2πr

Question 9

What is the area of a circle?

Answer 9

πr squared

Question 10

What is pythagoras’ theorem?

Answer 10

The lengths of the 2 shorter sides of a right-angles triangle are a and b. The length of the longer side is c. a squared + b squared = c squared.