Question

if three angles of a quadrilateral are each equal to 75 degree then find the fourth angle?

Answer 1

Answer:

The sum of all four angles of the quadrilateral is 360°. To find the fourth angle or the missing angle in a quadrilateral when the measurements of three angles of a quadrilateral are known, then subtract the three angles from 360° to calculate the missing angle.

Answer 2

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$\huge{ \fcolorbox{aqua}{azure}{ \color{red}{Solution :}}}$

We are given that three angles of a quadrilateral are each equal to 75°

Sum of all angles of quadrilateral is 360°

So, 75°+75°+75°+x=360°

225°+x=360°

x=360°-225°

x=135°

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