COMPASS Geometry

Question 1

What is the sum of the interior angles of a triangle?

Accepted Answer

180°

Answer

The interior angles of any triangle always sum to exactly 180°.

Question 2

Two lines that lie in the same plane and never intersect are called:

Accepted Answer

Parallel lines

Answer

Parallel lines remain the same distance apart and never meet, no matter how far they extend.

Question 3

Which quadrilateral has all four sides equal in length AND all four angles equal to 90°?

Accepted Answer

Square

Answer

A square satisfies both conditions: four equal sides and four right angles.

Question 4

What is the measure of each interior angle of a regular hexagon?

Accepted Answer

120°

Answer

Using the formula (n−2)×180°÷n with n=6 gives (4×180°)÷6 = 120°.

Question 5

An isosceles triangle is defined as a triangle with:

Accepted Answer

Exactly two sides equal

Answer

An isosceles triangle has exactly two sides of equal length, and the angles opposite those sides are also equal.

COMPASS Practice Test