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GEOMETRY Unit 5, Triangles
Nam
Notes 5-2, Triangle Sum Thm, Ext Angle Thm.
Date __________ Period _________
Triangle Sum Theorem and Exterior Angle Theorem
Triangle Sum Theorem –
Find the value of the variable(s) in each figure below.
1.
2.
3.
4.
Interior and Exterior Angles of a Triangle
Notes 5-2
Triangle Sum Thm, Ext Angle Th.
Exterior Angle of a Triangle –
Remote Interior Angles of a Triangle –
Exterior Angle Theorem –
5.
6.
65o
X
7.
80°
x
3x - 22
145o
Notes 5-2
Triangle Sum Thm, Ext Angle Th.
11.
12.
39° 21°
65°
13.
x y
z
14.