4 × 3 × 2 × 1 = 24
34 . B
That and are parallel tells you that the outside triangle ACE and
the inside triangle BCD are similar. Corresponding sides are proportional:
35 . E
For what values of x can you take the square root of x^2 – 4? Only those
values for which x^2 – 4 is nonnegative:
36 . A
Sketch the diagram: