Question

9. ABCD is a parallelogram. If the two diagonals are equal, find the measure of Angle ABC.

Answer 1

THE PARALLELOGRAM HAVING IT'S DAIGONALS EQUAL IS A RECTANGLE ,SO AS WE KNOW THE ANGLES IN A RECTANGLE ARE ALL EQUAL TO 90 °

ANGLE ANC = 90 ° ,

THANKS FRIEND,HOPE IT HELPS.