Q) ABCD is a parallelogram,if the two diagonals are equal find the measure of angle ABC 

Asked by banerjee_milky | 28th Jun, 2017, 08:57: PM

Expert Answer:

begin mathsize 16px style In space straight a space parallelogram comma space if space two space diagonals space are space equal comma space then space the space parallelogram space is space straight a space rectangle. space
So comma space ABCD space is space straight a space rectangle. space
We space know space that comma space each space interior space angle space of space straight a space rectangle space is space 90 degree. space
Since space ABC space is space an space interior space angle space of space rectangle space ABCD comma space so space measure space of space angle ABC space is space 90 degree. end style

Answered by Rebecca | 28th Jun, 2017, 09:34: PM