Use the given property to complete the statement.
Substitution: A + B = 180°. B = C, so A + ______ = 180°
A. ∠A
B. ∠B
C. ∠C
D. None of these

Question

Use the given property to complete the statement. 
Substitution: A + B = 180°. B = C, so A + ______ = 180°
	A. ∠A
	B. ∠B
	C. ∠C
	D. None of these

jim_thompson5910 · Answer

B and C are the same

jim_thompson5910 · Answer

because B = C

jim_thompson5910 · Answer

so substitution allows us to replace every copy of B with C (since they are the same)

anonymous · Answer

It is c, because you are supposed to distribute it around. :) since b and c are the same, you have to change it to say, a+c also quals 180

anonymous · Answer

hmm.. tyvm both of you <3

anonymous · Answer

Ok, thx, do you understand now? LOL, I'm taking Geometry now too!

anonymous · Answer

tbh no not really, geometry is hard for me lol :L

jim_thompson5910 · Answer

A + B = 180°

A + C = 180° ... replace B with C using the substitution rule

this works because B = C is given

jim_thompson5910 · Answer

so that's why the answer is C

anonymous · Answer

LOL, Geometry is hard because of the proofs too! I agree! But it is better than Algebra, I have to take it online!

anonymous · Answer

thank you for explainin it :D and yeah I gotta take it online too, makes it 10x more difficult for me lol

anonymous · Answer

LOL, I hate online school, the teacher I have won't teach it to me, and you are welcome! :D