Question

1. If three angles of a quadrilateral are 80'. 70° and 50°, find its fourth angle.
rilateral are in the ratio 2 : 3:5. If its fourth angle​

Answer 1

Answer:

Sum of all angles of quadrilateral = 360°

80° + 70° + 50° = 200°

Fourth angle = 360°-200°

= 160°

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Answer 2

Answer:

we know that

/_A+ angle B + angle c+ angle D = 360

so 80+70+50 + d =360

200 +d =360

d=160