Question

Three angles of a trapezium are 70°, 80° and 110°. Its fourth angle is:
(a) 120°
(b) 130
(c) 210
(d) None of these​

Answer 1

Answer:

(d) None of these

Step-by-step explanation:

Trapezium is a quadrilateral. The sum of all angles of a quadrilateral is always 360 degrees.

Let us say that the fourth angle is x.

Then,

x + 70 + 80 + 110 = 360

x + 260 = 360

x = 100

Answer 2

Answer:

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Step-by-step explanation:

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