Question

quadrilateral has three acute angle of each measuring 75 °. find the measure of fourth angle.

Answer 1

heya mate here's the answer

let the 4th angle be x
so 75°+ 75°+75° +x= 360°
=> x= 360 - 225
=> x = 135°
therefore the 4th angle= 135°

hope this helps

Answer 2

Let the fourth angle be x
And,
Let each angle of three angle be 75•
As we know that sum of angles of quadrilateral =360•
=x+75+75+75=360•
=x+225=360•
x=360-225=135•
So therefore fourth angle will be 135•