Question

3. The angle of a quadrilateral are respectively 100° , 98° , 92° . find the

fourth angle​

Answer 1

Answer:

Step-by-step explanation:

70° is the answer.

100°+98°+92+angle4=360°

angle 4 =360°-280

angle 4=70°

Answer 2

Step-by-step explanation:

Q No. 3

$\bf \underline{Solution-}$

Sum of the three given ∠s of quadrilateral = 100° + 98° + 92° = 290°

Sum of the four angles of a quadrilateral = 360°

∴ Fourth angle = 360° - 290° = 70°

Hence, the fourth angle of a given quadrilateral is 70°