Pre-Algebra Worksheet 8.5A: Congruent Polygons

1. SON Name ____________________________________________________ Date __________
LES
8.5 Practice396–401 A
Lesson 8.5
For use with pages
In Exercises 1 and 2, complete the statement.
1. Congruent sides have equal _____________.
2. Congruent _____________ have equal measures.
3. What are the three special rules to tell if two triangles are congruent?
In Exercises 4–7, use the diagram and the fact that
quadrilateral ABCD c quadrilateral LMNO.
4. Name four pairs of congruent angles. B
O N
A
5. Find maB.
102
8 mm
6. Find the length of BC. L
C
7. Find maM. D 10 mm M
8. Name all the congruent triangles shown.
A H R Z
E
13 in.
72 4 in.
4 in. 72 5 in.
59 4 in. X
F
72
72
J I T
S
13 in. 12 in. Y
12 in. G
B C
5 in.
15 m
In Exercises 9–12, use the diagram and W X 10 m
the fact that quadrilateral WXYZ c T
quadrilateral QRST.
104
9. Name all of the corresponding angles.
Y
10. Name all of the corresponding sides. Z
76
S
11. Find maX, maQ, maW, and maS.
R
12. Find the lengths of �� and ��.
In Exercises 13 and 14, explain how you know two triangles
are congruent.
13. 14. M H
A X 8 in.
15 mm
Y 68 68 15 mm
8 in. 6 in.
6 in. 49 49
N I
7 in.
B C O G
Z
7 in.
45
Middle School Math, Course 3
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