SAT Subject Test Mathematics Level 2

Similar Figures

The area ratio between similar figures is the square of the side ratio.

Three Special Triangle Types

Pythagorean Theorem

For all right triangles,

(leg 1 )^2 + (leg 2 )^2 = (hypotenuse)^2

Four Special Right Triangles

1. Isosceles:   Two equal   sides   and two equal   angles.

2. Equilateral: Three   equal   sides   and three   60° angles. If  the length  of  one side    is  s,  then

3. Right:   One right   angle.  You can use the legs    to  find    the area:

1. The  3-4-5   Triangle

2. The  5-12-13 Triangle