Question

pls help me solve this Q

Answer 1

given,
∠1=∠3 and ∠2=∠4,
so ΔABC≈ΔADC    (sides opposite to equal angles are always equal)
also,
∠1+∠2=∠3+∠4,   (axiom - things equal to same thing are equal to one another )
therefore ∠c=∠a

Answer 2

Hey,

The given triangles are congruent by the A. A. S axiom of conruency,

So, Since the triangles r congruent therefore the angles are also equal, so, angle 1=angle 2 and angle 3=angle 4.

So, angle 1+angle2=angle 3+ angle 4
And, since angle A=angle 1+ angle 2....and angle C=angle 3+angle 4,

So, angle A=angle C.

Hope this helps you buddy!!

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