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Flashcards in Maths Deck (15)
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1

for direct proportion, y =

y = kx

2

for inverse proportion, y =

y = k / x

3

what is the significance of co-interior angles ?

add to 180

4

how to work out if regular polygons will tessellate ?

interior angle divides into 360

5

exterior angle =

360 / number of sides

6

what odes it mean if two shapes are congruent ?

same shape and size

7

give the 4 ways of proving congruence

SSS
SAS
ASA
RHS

8

what does it mean if two shapes are similar ?

identical in shape but differ in size

9

sum of interior angles =

180(n-2)

10

area of trapezium =

0.5(a + b) h

11

Surface area of a sphere =

4πr^2

12

Surface area of a cone =

πrl + πr^2

13

surface area of a cylinder =

2πrh + 2πr^2

14

volume of a sphere =

4/3 πr^3

15

volume of a pyramid =

1/3 x base area x height