Maths

Question 1

For a regular polygon, what is the sum of the exterior angles?

Answer 1

360*

Question 2

For a regular polygon, what is the value of each exterior angle?

Answer 2

360/n *

Question 3

For a regular polygon, what is the sum of the interior angles?

Answer 3

(n-2) x 180

Question 4

When will regular polygons tesselate?

Answer 4

When their interior angle divides into 360*, so that they fit together around a point exactly.

Question 5

What are the 5 criteria for congruent triangles?

Answer 5

1) SAS
2) SSS
3) ASA
4) AAS
5) RHS (right-angle triangle, with hypotenuse and one other side)

Question 6

What is the equation for the surface area of a sphere?

Answer 6

4πr2

Question 7

What is the equation for the surface area of a cone?

Answer 7

πrl + πr2

where l is the slant height

Question 8

What is the equation for the volume of a sphere?

Answer 8

4/3 πr3

Question 9

What is the equation for the volume of a pyramid?

Answer 9

1/3 x Base area x Vertical height

Question 10

What is the equation for the volume of a cone?

Answer 10

1/3 x πr2 x h

where h is the vertical height

Question 11

What two factors do you look at when comparing two sets of data?

Answer 11

1) Average

2) Spread