Unit Three More Proofs for Postulates
9 and 10 Questions with Correct
Answers
True/False - Use the following figure to answer the question.
When line t is perpendicular to both line l and line m, then lines l and m are parallel. -
ANSWERSTrue
True/False - Use the following figure to answer the question.
If line t is perpendicular to both line l and line m, then angle 1 and angle 2 are both right
angles. - ANSWERSTrue
True/False - Use the following figure to answer the question.
If lines l and m are parallel, then angle 2 and angle 3 are corresponding angles. -
ANSWERSTrue
True/False - Use the following figure to answer the question.
If angle 1 and angle 2 are equal, then lines l and m are parallel. - ANSWERSTrue
Match the reasons with the statements in the proof to prove that lines l and m are
parallel, given that m∠2 = 122° and m∠3 = 58°
Given:
measure of angle 2 = 122°
measure of angle 3 = 58°
Prove:
l || m
STATEMENT:
1. m∠2 = 122° and m∠3 = 58°
2. ∠3 and ∠5 are supplementary angles
3. m∠3 + m∠5 = 180°
4. 58° + m∠5 = 180°
5. m∠5 = 122°
