Question

find the fourth angle of a quadrilateral if it's three angles are 98(degree) ,115 (degree) and 77(degree)​

Answer 1

Answer:

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Answer 2

Answer:

70°

Step-by-step explanation:

Given:

It has four sides

3 angles are:-

98°,115°,77°

To find:-

4th angle

Solution:-

W.K.T,

in a quadrilateral the total angle =360°

i.e.,

98+115+77+x=360

=290+x=360

=x=360-290

=x=70°

therefore,

the fourth angle is 70°

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