1. If three lines all meet in a single point, how many pairs of
vertical angles are formed?
2. Find the measure of the third angle in each of the following
triangles.
a.
b.
70°
50°
45°
\\
c.
d.
30°
60°
60°
3. Find the measure of a complementary angle, a supplementary
angle, and a vertical angle for the following measures.
a. $m(\angle A) = 30°$
b. $m(\angle B) = x°$
4. In $\triangle ABC$, the measure of $\angle B$ is three times the measure of
$\angle A$ and the measure of $\angle C$ is twice the measure of $\angle B$. Find
the measure of each angle.
5. What is the measure of the complement of the supplement
of a 150° angle?
6. If the measure of an angle is 23°17?18?, what is the measure
of its supplement?
7. If $9x^\circ$ and $(5x + 62)^\circ$ are the measure of complementary
angles, what is the measure of each angle?
8. For each of the following figures, determine whether $m$ and $n$
are parallel lines. Justify your answers.
a.
130°
b.
110°
50°
70°
