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GSE Geometry Support
2.1 - Congruence & Triangles
2.1 – Practice
Name: ________________________________________________ Date: _______________________
Supplementary and Complementary Angles Homework
Name the figures described. Use the figure for 1-6.
1. Two acute angles. _________________
2. Two obtuse angles. ___________________
A
3. Two pairs of vertical angles. _________________________
4. Four pairs of adjacent angles. _______________________________
5. Four pairs of supplementary angles. ___________________________
6. Two supplements of
C
1
X 2
4 3
D
B
AXC . ____________________________
7. Suppose 1 and 2 are known to be complementary. If m 1  20 , then
m 2  __________.
8. Suppose 3 and 4 are known to be supplementary. If m 3  40 , then
m 4  __________.
For problems 9-10, if
1 and
9. m 1  2x, m 2  3x
For problems 11-12, if
2 are complementary angles, state the numerical value of x .
10. m 1  x, m 2  x  20
3 and
11. m 3  2y, m 4  3y  15
4 are supplementary angles, state the numerical value of y .
12. m 3  y  10, m 4  3y  10
Solve.
_____ 13. The measure of an angle is 30 more than its complement. Find the measure
_____
of the angle and its complement.
_____ 14. The measure of an angle is the same as the measure of its complement.
Find the measure of the angle.
GSE Geometry Support
2.1 - Congruence & Triangles
2.1 – Practice
_____ 15. The measure of an angle is 20 less than the measure of its supplement.
_____
Find the measure of the angle, the measure of its supplement, and the
measure of its complement.
_____ 16. The measure of an angle is twice that of its supplement. Find the measure of
_____
the angle and its supplement.
D and E form a linear pair and m E  3m D . Find the measure of
_____ 17.
_____
each angle and the measure of the complement of D .
18. Find all the missing angles.
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