Question

if one angle of a quadrilateral is a right-angle then the sum of the measures of its remaining angles is​

Answer 1

Answer:

we know that the sum of all the four angles if a quadrilateral is 360°

it is given that one of the angle is 90°

thus the sum of rest three angles if the quadrilateral will be ;

=360°-90°

=270°

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Answer 2

270°

Step-by-step explanation:

let the another angle be x

sum of all angle of quadrilateral = 360°

x+x+x+90=360°

3x+90=360

3x=360-90

3x=270°

so the sum of three angle of the quadrilateral is 270°

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