This document provides information and examples about complementary and supplementary angles in geometry. It defines complementary angles as two angles whose sum is 90 degrees and supplementary angles as two angles whose sum is 180 degrees. The document gives examples of angle pairs that are complementary and supplementary and those that are not. It also introduces vertical angles and the vertical angle theorem, which states that vertical angles are congruent.

1. GT Geom
 Pass out papers in the bin
 Put CW/HW in the center
of the table

2. Classify each angle as acute, right, or obtuse.
1. XTS
2. WTU
3. K is in the interior of LMN, mLMK
=52°, and mKMN = 12°. Find
mLMN.
64°
acute
right
Geom Drill 9/10/13

3. 32°
4. BD bisects ABC, mABD = ,
and mDBC = (y + 4)°. Find mABC.

4. 5. mWYZ = (2x – 5)° and mXYW = (3x +
10)°. Find the value of x.
35

5. Geometry
 Complete the statement:
 1. Through any two points there is . .
 2. Three noncollinear points determine . . .
 3. The intersection of two lines is. . .
 4. The intersection of two planes is . . .

6. Objective:
To define and find the
measure of
supplementary &
complementary angles.

7. adjacent angles
linear pair
complementary angles
supplementary angles
vertical angles
Vocabulary

8. Fine the Values of <A + < B and
then define Complimentary
 Complimentary




68,22
37,53
60,30
45,45




BA
BA
BA
BA
 Not Complimentary




58,12
37,63
60,20
45,47




BA
BA
BA
BA

9. Fine the Values of <A + < B and
then define Supplementary
 Supplementary




98,82
90,90
50,130
35,145




BA
BA
BA
BA
 Not Supplementary




98,92
90,80
50,150
25,145




BA
BA
BA
BA

10. Many pairs of angles have special
relationships. Some relationships
are because of the measurements
of the angles in the pair. Other
relationships are because of the
positions of the angles in the pair.

11. Vocabulary
Complementary Angles -
Two angles whose sum
is 90 degrees.

12. Vocabulary
Supplementary Angles -
Two angles whose sum
is 180 degrees.

14. Write the complement
1) 15º
2) 87º
3) xº

15. Write the supplement
1) 25º
2) 107º
3) xº

16. ????????????????
Are supplementary
angles a linear
pair?

17. Vertical Angles
The opposite angles
formed when two
lines intersect
1
2
3
4

18. Vertical Angle
Theorem
Vertical angles are
congruent