`A B C D` is a parallelogram, if the two diagonals are equal, find the measure of `/_A B Cdot`

ABCD is a parallelogram,if the two diagonals are equal,find the measure of /_ABC.

In a parallelogram, if the diagonals are equal, then the parallelogram necessarily will be

In parallelogram ABCD, diagonals AC and BD are equal. Find the measure of angle ABC and prove that the quadrilateral ABCD is a rectangle.

In a parallelogram A B C D , if /_D=115^0, then write the measure of /_A

ABCD is a parallelogram with AC and BD as diagonals. Then, A vec C - B vec D =

A B C D is a parallelogram. E is a point on B A such that B E=2\ E A\ a n d\ F is a point on D C such that D F=2\ F Cdot Prove that A E\ C F is a parallelogram whose area is one third of the area of parallelogram A B\ C Ddot

A B C D is a parallelogram whose diagonals intersect at Odot If P is any point on B O , prove that: a r\ ( A D O)=A R\ ( C D O) a r\ (\ A B P)=\ a r\ (\ C B P)

A diagonal of a parallelogram divides it into two triangles of equal area.

A B C D is a parallelogram in which diagonal A C\ bisects /_B A Ddot If /_B A C=35^0 , then /_A B C= 70^0 (b) 110^0 (c) 90^0 (d) 120^0