Topic 3: Proving Lines are Parallel
12. Given the following information, determine which lines, if any,
are parallel. State the converse that justifies your answer.
Given
a. 28= 220
b. 21 = 29
c. m23+ m210 = 180°
d. 211 216
e. m26+ m224 = 180°
f. 214 223
g. 24 = 221
h. m28+ m2/18 = 180°
i. 25 215
Parallel Lines
1/2 5 6
4/3 87
13 14
16 15
9/10
12/11
17/18
21/22
m
Converse
X
→y
19 20
23 24
11
=
