An altitude drawn from a vertex of a triangle divides the opposite side proportionally.

a) always
b) sometimes
c) never

:  A line that passes through two sides of a triangle divides the sides proportionally.
sometimes

An altitude drawn from a vertex of a triangle divides the opposite side proportionally.
sometimes

A line parallel to one side of a triangle divides the other two sides proportionally.
True

If two sides of one triangle are proportional to two sides of another and included angles are equal, then the triangles are similar.
True

The perimeters of similar triangles are in the same ratio as the corresponding sides.
True

In a 30-60-90 triangle, the hypotenuse is the shorter leg times the square root of two.
False

All of the following are ways to prove triangles congruent except
SSS
SAS
ASA