Equations

Question 1

Area of a triangle

Answer 1

1/2(bh)

Question 2

Right isosceles trianlge ratio

Answer 2

x : x : x root 2

Question 3

Area of square

Answer 3

side squared

Question 4

ratio of 30: 60: 90 triangle

Answer 4

x: x root 3: 2x

Question 5

definition of isosceles

Answer 5

one angle is different

Question 6

Area of a rectangle

Answer 6

lw

Question 7

Circumference of a circle (2 equations)

Answer 7

2πr or πd

Question 8

Area of a circle

Answer 8

π r²

Question 9

root 2 =

Answer 9

1.4

Question 10

line equation

Answer 10

y = mx+b

Question 11

slope =

Answer 11

rise/run = y₂ - y₁/x₂ - x₁

Question 12

length of a diagonal in a rectangular box

Answer 12

a² + b² + c² = d²

Question 13

Volume of a rectangular solid

Answer 13

lwh

Question 14

Volume of circular cylinder

Answer 14

π r² h

Question 15

probability =

Answer 15

of outcomes that satisfy the condition

of total possible outcomes

Question 16

permutation

Answer 16

number of ways a group can be organized in a specific order

Eg. 5 runners trying to finish on the podium

5 x 4 x 3

Question 17

combinations

Answer 17

number of ways to organize a group in no specific order

Eg going to the store to bring back 3 different ice cream flavors out of selection of 5 flavors

5 x 4 x 3

3 x 2 x 1

Question 18

Group equation

Answer 18

T = G₁ + G₂ - B + N