Question

ABCD is a parallelogram. if its diagonals are equal then angle abc is_________

Answer 1

Answer: it's 90°.

Step-by-step explanation:

A rectangle (including a square, cause square's a rectangle too) is the only parallelogram having diagonals of equal length. Therefore if we consider a rectangle ABCD with its equal diagonals AC and BD, we can conclude that angle ABC is 90°, because all the interior angles of a rectangle are 90°. I hope it's the correct ....