Question

Three angle of a quadrilateral are equal and the fourth angle measures 75 degree . what is the measures of each of the equal angles.

Answer 1

HEY MATE....
HERE'S THE ANSWER
______________
Total measure of a quadrilateral is 360°
so, from the question.
x+x+x+75=360
3x+75=360
3x=360-75
3x=285
x=95° ..... ans

Answer 2

the sum of angle in quadrilateral is 360°

let angle be a ∠A,=∠B,=∠C, ∠D=75°

∠A+∠B+∠C+∠D=360°

SO

∠A+∠A+∠A+∠D=360°

3∠A+75°=360°

3∠A=360-75

3∠A=285

∠A=285/3

∠A=95°

HENCE THE EQUAL ANGLE MEASURES IS 95° ALTERNATIVELY, ∠A=∠B=∠C=95°