SAT Subject Test Mathematics Level 1

SIMILAR TRIANGLES

In Example 2 you’re asked to express the area of one triangle in terms of the
area of another.

Example 2

Figure  2

1. Interior angles  add up  to  180°.

2. Exterior angle   equals  sum of  remote  interior    angles.

3. Exterior angles  add up  to  360°.

4.

Each    side    is  greater than    the difference  and less    than    the sum of

the other   two sides.

5.

In  Figure  2,  AB  =   BC. If  the area    of  ∆ABE    is  x,  what    is  the area    of

∆ACD    ?

1.

(A)

(B)