I need help finding A,B, and C

Question

Given: 

Prove: 

StatementProof
	Given
	Definition of congruent angles
	a.
and are a linear pair	Definition of a linear pair (shown in diagram)
and are supplementary	Linear Pair Postulate
	b.
	Substitution Property
	c.

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Answer 1

congruent angles=same angle; different length.

" sides=visa-versa

As for a 70°>; >s a+b=110 because all triangles have 3 angles the add up to 180°.

Since >s a and b are "congruent angles" each one =55°.

Answer 2

Lily, do you have a diagram showing the figure or it's shape? It is impossible to solve this if the shape of the figure is unknown.