Question

Diagonals of a quadrilateral QRST bisect each other, if Q= 35 degree, determine angle R

Answer 1

Answer:

In quadrilateral QRST diagonals bisect each other.

so QRST is a parellogram.

Now, angle Q and angle R are adjacent angles .

so, angle Q + angle R = 180°

Hence, angle R = 180°- 35° = 145°.