Angles
Postulates and Theorems
Congruent or Supplementary
Parallel Lines
100
<3 and <7 are which type of special angle pair?
Corresponding Angles
100
#13 on review
line a // line b converse of corresponding angles theorem
100
In order to prove line c // line d, which angles would need to be congruent? _____ and _____ _____ and _____
<6 and <4 <1 and <3
100
If line a // line b and line b is NOT perpendicular to line c, what can be concluded from this statement? a. line c is perpendicular to line a b. line c is not parallel to line a c. line c is parallel to line a d. line c is not perpendicular to line a
d. line c is not perpendicular to line a
200
Find the value of x
45
200
# 14 on review
alternate exterior angles theorem
200
Interior and Exterior angles on the same side of the transversal are always ____________________ which means the sum of their angles is _____.
Supplementary, 180'
300
Find the measurement of both angles.
75' 75'
300
List the 5 theorems/postulates that can be used to prove that two lines are parallel
Converse of alternate interior angles theorem Converse of alternate exterior angles theorem Converse of corresponding angles postulate Converse of same side interior angles theorem Converse of same side exterior angles theorem
300
# 5 on review first question
line c // line d
400
AB // CD and m
x = 11 m
400
If two parallel lines are cut by a transversal, which of the angle pairs are congruent? ________________________ ________________________ ________________________
Corresponding Angles Alternate Interior Angles Alternate Exterior Angles
400
# 5 on review, 2nd question
they are perpendicular
400
#10
38
500
Find the value of x, y, and z if line k // line l. State the theorem or postulate that justifies your answer.
x = 60 : Alternate Exterior Angles Theorem y = 5 : Same Side Interior Angles Theorem z = 15 : Corresponding Angles Postulate
500
If two parallel lines are cut by a transversal, which of the angle pairs are NOT congruent? _________________________ _________________________
Same Side Interior Angles Same Side Exterior Angles
500
Find the measure of all other angles.
m<2 = 83 m<3 = 97 m<4 = 83 m<5 = 97 m<6 = 83 m<7 = 97 m<8 = 83
500
#11 on review
Answers on paper