# Download Aim #75: How do we solve for an exterior angle of a triangle? (Unit 8

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Transcript
Aim #75: How do we solve for an
exterior angle of a triangle?
(Unit 8 - Geometry)
2-15-17
HW #75: 1) Polygons Handout
2) Study for Quiz tomorrow! (Aims #71-74)
Do Now: Complete #7 from yesterday's Aim.
Exterior Angles of Triangles
Solve for x.
Ex. #1:
80
40
x
Ex. #2:
45
72
x
The measure of an exterior angle of a triangle
is equal to the sum of the two non-adjacent
remote interior angles of the triangle.
Ex. #3:
100
x
30
A Polygon is a closed figure
with 3 or more sides
all the sides and angles
are congruent
An interior angle and an exterior angle
of a regular polygon are supplementary.
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