Question

One of the angles of a quadrilateral is a right angle. If the sum of other two angles is 135 find the fourth angle.​

Answer 1

Step-by-step explanation:

We know that sum of all angles in a quadrilateral is 360 degrees.

so,

let the unknown angle be x

and given that sum of other two is 135°

so,

90°+135°+x=360°

x=360-225

x=135°