11/15/2011 Geometry Unit 3 Practice Test
4
Name: _______________________________ Date: ______________ UNIT 3 PRACTICE TEST: PARALLEL LINES GEOMETRY, FALL 2011, MR. CARLBERG 1. (8 points) Given , find the values of x and y. 2. (8 points) Are a and b parallel? Write one sentence (not a full proof) justifying why or why not. 3. (9 points) Given that , , and , find the values of , , and . a b a b 79° 109°
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Transcript of 11/15/2011 Geometry Unit 3 Practice Test
Name: _______________________________ Date: ______________
UNIT 3 PRACTICE TEST: PARALLEL LINES
GEOMETRY, FALL 2011, MR. CARLBERG
1. (8 points) Given , find the values of x and y.
2. (8 points) Are a and b parallel? Write one sentence (not a full proof) justifying why or why
not.
3. (9 points) Given that , , and , find the values of , , and
.
a
b
a
b
79°
109°
4. Use proof by contradiction to prove the following.
If ̅̅ ̅̅ ̅̅ ̅̅ and ̅̅ ̅̅ ̅̅ ̅̅ , then is not the midpoint of ̅̅ ̅̅
A B C D E
5. Prove the following.
If two lines are parallel, then same side exterior angles are supplementary.
6. Prove the following claim:
If and , then ̅̅ ̅̅ ̅̅ ̅̅ .
A
B
C
D
E
E
E
F
G
