Question

Two similar triangles are shown below:

Which two sets of angles are corresponding angles?
∠a and ∠d; ∠b and ∠c
∠a and ∠c;∠b and ∠d
 ∠a and ∠e;∠b and ∠d
 ∠a and ∠e ∠b and ∠c

Answer 1

angle a and angle d, angle b and angle c 

Answer 2

∠a and ∠d; ∠b and ∠c...if you rearrange the triangle on the right so the angles correspond with each other, you will see that the lengths are dilated by two and from there you can see what angles are the same...