Question

three angles of a quadrilateral are 80°,95° and 112°.its fourth angle is
a) 78°
b) 73°
c) 85°
d) 100°​

Answer 1

Answer:

Hope my answer helps you mate :-)

Step-by-step explanation:

We know that sum of all 4 angle of quadrilateral is 360 degrees

so 80+95+112+ angle 4=360

angle4= 73 degree

b) is the answer

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Answer 2

Answer:

b) 73°

Step-by-step explanation:

Given : angles of a quardrilateral = 80°, 95° and 112°

           Let the fourth angle be x

We know that the angles sum property of a quadrilateral is 360 degree.

80 + 95 + 112 + x = 360

287 + x = 360

x = 360-287

x = 73 degree

Therefore the fourth angle is 73°