Answer: Given: ABCD is a parallelogram, with four angles ∠A, ∠B, ∠C, ∠D respectively. This gives ∠B = ∠D by CPCT (corresponding parts of congruent triangles). Similarly, we can show that ∠A =∠C. Hence proved, that opposite angles in any parallelogram are equal.
Step-by-step explanation:
