Question

three angles of a quadrilateral are equal and its fourth angle is a right angle . find measure of each .​

Answer 1

Heya!❤️

Given 3 angles are equal and one of them is right angled

So we know that :

• Right angle is of 90 degree

• Sum of all angles of quadrilateral= 360degree

Let measure of other angles be x

$x + x + x + 90 = 360$

$3x + 90 = 360$

$3x = 360 - 90$

$3x =27 0$

$x = \frac{270}{30}$

$x = 90$

Hence,

Measure of each angle of quadrilateral= 90 degree

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Answer 2

Answer: All are 90 deg.

Step-by-step explanation:

Let all the three unknown angles be x .

By angle sum property of quad.,

x+x+x+90=360

3x = 270

x=90