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Unit 2a
Linear Pair Postulate: If two angles make up a linear
pair, they add up to 180.
1.) Two parallel lines are cut by a
transversal. Mark congruent
angles on the diagram below.
Name__________________________
Vertical Angle Theorem: If two angles are vertical
angles, they are congruent to each other.
Are the following two polygons similar?
Explain.
7.) What are the 3 ways to prove
triangles are similar?
4)
Are the triangles similar? AA,
SAS, and SSS similarity
8.)
5)
2.) Plot AB if A(2, 4) and B(5, 2).
Dilate the whole line segment by a
factor of 3 to obtain AB  and
graph it. What is the ratio of the
lengths of AB to AB  ?
9.)
6)
3.) Definition of Similar
Polygons: Two polygons are
similar if their corresponding
angles are __________
corresponding sides are
_________________.
and the
10.)
11)
15.) Solve for x
19. The shadow of a 12-foot
pole is 8 feet long at the
same time the shadow of a
tower is 35 feet long. How
tall is the tower?
20. Solve for x, and find the
missing side lengths.
12.)
16.) x = _________
21. Solve for x.
13)
17.)
f=
14) Write a 2-column proof.
Given: <S = <V
22. Solve for x and y.
18)
Prove: ΔLVO~ΔESO
y
x = _________ y = _______