In a parallelogram ABCD, AB = 54, BC = 78, AC^{2} — BD^{2} = 8,168. Find the following.

a. the angles ABCD

b. the diagonals AC and BD

c. the angles between the diagonals AC and BD

I have no idea how to start solving these questions.

somebodyIUsedToKnow Apr 28, 2023

#1**+1 **

a. Angles A and C are 40 degrees, angle B and D are 140 degrees.

b. AC = 90, BD = 68

c. The angle between the diagonals is 20 degrees.

Guest Apr 28, 2023

#2**+1 **

Thank you for your answers.

Could you explain how you got those answers, please?

somebodyIUsedToKnow
Apr 28, 2023