Question

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Answer 1

@mathstudent55

Answer 2

1. m<BAC + m<C + m<B = 180; Given
2. <DAB and <BAC are supp anlges; Linear pair
3. m<DAB + m<BAC = 180; Def supp angles.
4. m<DAB + m<BAC =m<BAC + m<C + m<B ; Substitution (1. and 3.)
4. m<DAB = m<C + m<B; Subtraction prop of equality.

Answer 3

Thank you very muchh!!!

Answer 4

You're welcome.

Answer 5

do i just say linear pair for step #2 or do i say If two angles form a linear pair, then they are supplementary

Answer 6

The key to Geometry proofs is memorizing all definitions, postulates, and theorems since they are the building blocks of Geomtery. Even if you don't memorize them word for word, then you need to at least know they exist and how to use them.

Answer 7

ok thanks u