Complete the following paragraph proof. (You may use the choices more than once and you may not use all the choices)
Given: <5 and <7 are supplementary. <7 and <9 are also supplementary
Prove: <5 <9
We know that <5 and <7 are supplementary. _______ <7 and <9 are also supplementary because it is m<5 + m<7 =
and m< 7 + m<9 = , by definition of supplementary angles. Then, m<5 + m<7 = m<7 + m<9 by the
. Subtract m<7 from each side and you get m<5 = m<9. Then by the definition of congruence, <5
1 answer
and <9 are congruent.