determining angle measures of intersecting lines cc.7.g.5 use facts about supplementary,...
TRANSCRIPT
Determining Angle Measures of Intersecting Lines
CC.7.G.5 Use facts about supplementary, complementary, vertical, and adjacent
angles in a multi-step problem to write and solve simple equations for an unknown
angle in a figure.
Warm Up
• Use the figure to answer the following:
1
2 3
45
Do <1 and <2 form a linear pair?
Do <4 and <5 form a linear pair?
Do <5 and <3 form vertical angles?
Do <1 and <3 form vertical angles?
Are <1 and <5 complementary angles?
Are <2 and <3 supplementary angles?
Are <5 and <4 complementary angles?
Video
• http://www.khanacademy.org/math/geometry-1/core-geometry/v/angles-at-the-intersection-of-two-lines
Directions:Determine the missing angle.
#1
45º?º
#1
45º135º
#2
65º
?º
#2
65º
25º
#3
35º
?º
#3
35º
35º
#4
50º
?º
#4
50º
130º
#5
140º
?º
#5
140º
140º
#6
40º
?º
#6
40º
50º