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Lesson Quiz
Lesson 3-5
For Exercises 1 and 2, if the figure is a polygon, name it by its
vertices and identify its sides. If the figure is not a polygon,
explain why not.
1.
A
C
B
2.
D
A
B
C
© Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved.
E
D
3. Find the sum of the measures of the angles in an octagon.
4. A pentagon has two right angles, a 100° angle and a
120° angle. What is the measure of its fifth angle?
ABCDEFGHIJ is a regular decagon.
5. Find mlABC.
6. lXBC is an exterior angle at vertex B. Find mlXBC.
Answers
1. quadrilateral ABCD; AB, BC, CD, DA
2. not a polygon because two sides intersect at a point other than endpoints
3. 1080
4. 140
5. 144
6. 36
Geometry Chapter 3
Lesson Quiz
97
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