Question

Three angles of a quadrilateral are 72 degree ,80 degree and 95 degree ,find the fourth angle​

Answer 1

Answer:

Given,the three angles of a quadrilateral are 72°,80° and 95°.

Let the fourth angle be x.

We know that sum of all the angles of a quadrilateral is 360°.

72+80+95+x=360

247+x=360

x=113°

Hence,the fourth angle=113°.

Hope it helps✌️

Answer 2

Answer:

We know, by angle sum property, the sum of angles of a quadrilateral is 360

o

.

The given angles are, 70

o

,95

o

,105

o

.

Let the fourth angle be x

o

.

Then, 70

o

+95

o

+105

o

+x

o

=360

o

.

⇒ 360

o

−(70

o

+95

o

+105

o

)=x

∘

⇒ x

o

=360

o

−270

o

=90

∘

.

Therefore, the fourth angle is x

o

=90

o

.

Hence, option A is correct.

Step-by-step explanation:

90°

hope it helps