Geometry proofs?!?

Question

I'm really confused on figuring them out. I don't understand which postulates to use and things like that. Please help me understand it. If you could please proof this problem and explain how you got it. Thank you.

1. If m
2. Given: <1 and <3 are supplementary.
<3 and <4 form a linear pair.
Prove: <1 is congruent to <4

Again, thanks.

For #1, let me rephrase it:

Given: m m m
Prove: m

Answer 1

m
m
so m
subtract m
m
but m
so
m
2)

m<1 + m<3 = 180(since they are supplementary)

m<3 + m<4 = 180(since they form linear pair)

so m<1 + m<3 = m<3 + m<4

subtract m<3

m<1 = m<4

Answer 2

m m m m m

Answer 3

sounds like your college grants one geometry classification that would not contain doing proofs, and a greater rigorous (tougher) classification that does. i think you're interior the tougher classification.maybe your grade would be greater heavily weighted, or maybe yours is the direction that satisfies the faculty geometry requirement. you will desire to talk on your college counselor and merely ask. Or look on the college website.

Answer 4

for number 1 what are you trying to prove