Download Vertical Angles Vertical Angles

1.6
Angle Pair Relationships
HMWK:
pp. 48 – 49, #s 20-36, 45-55
Game Plan:
Today I will be able to identify …
• Vertical angles and linear pairs
• Complementary & supplementary angles
Warm-up:
Draw the following figures.
1. Two intersecting lines AB and CD, intersecting at E.
2. A right angle JKL, with ray KM in the interior.
3. Line FG and ray HI, so that H in on line FG.
1.6
Angle Pair Relationships
Quiz 1.1 – 1.5
Please clear your desks, excepts
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Pencil
Formula sheet
Compass
Straight edge
Calculator
When you are finished, either read or turn your quiz
over and draw me a picture! 
1.6
Angle Pair Relationships
Vertical Angles
Vertical Angles: Two angles are vertical if
sides form two pairs of opposite rays.
2
1
4
3
* Vertical angles are congruent.
Name two pairs
of vertical
angles.
1.6
Angle Pair Relationships
Linear Pairs
Linear Pair: Two angles that are adjacent &
the noncommon sides are opposite rays.
2
1
* Sum of the angles formed by a linear pair is
180°
1.6
Angle Pair Relationships
Complementary Angles
Sketchpad
• Two angles whose sum measures 90°
• Each angle is the complement of the other
• Adjacent or nonadjacent
47°
43°
43°
47°
Complementary
adjacent
Complementary
nonadjacent
1.6
Angle Pair Relationships
Supplementary Angles
Sketchpad
• Two angles whose sum measures 180°
• Each angle is the supplement of the other
• Adjacent or nonadjacent
47°
133°
47°
Supplementary
adjacent
133°
Supplementary
nonadjacent
1.6
Angle Pair Relationships
Wrap Up
Tell your neighbor two things you learned
today.