AnswersGeometry - Semester 1 PathwaysLinear Pairs and Vertical Angles

Linear Pairs and Vertical Angles Answers

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6

Given: mEDF = 120°; mADB = (3x)°; mBDC = (2x)°Prove: x = 24

Question illustration
A
vertical angles are congruent
B
substitution
C
definition of congruency
D
definition of equality
7

Given: mORP = 80° mORN = (3x + 10)°Prove: x = 30

Question illustration
A
ORP and ORN are a linear pair
Option A
B
ORP and ORN are vertical angles
Option B
C
80 = 3x +10
D
x = 30
9

Given: mADE = 60° and mCDF = (3x + 15)°Prove: x = 15

Question illustration
A
Statement: 60 = 3x + 15; Reason: substitution
B
Statement: x = 15; Reason: subtraction property of equality
C
Statement: 60 = 3x + 15; Reason: transitive property
D
Statement: x = 15; Reason: subtraction and division properties of equality

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