Question

IN A QUADRILATERAL THE SUM OF THREE ANGLE IS EQUAL TO THRICE THE 4 TH ANGLE . THE MEASURE OF 4TH ANGLE IS​

Answer 1

Step-by-step explanation:

sum of all the angles in quadrilateral is 360°

angle A + angle B +angle C+ angle D = 360°

given that angleA + angle B+ angle C = 3(angle D)

3( angle D)+ angle D = 360°

4( angle D) = 360°

angle D= 360°/4= 90°

angle D = 90°

Answer 2

Answer:

$90 {}^{o}$

Step-by-step explanation:

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