Question

19. In the adjoining figure, ABCD is an isosceles
trapezium, the values of x, y and z respectively are
D
X
(b) 110°, 70°, 110°
(d) none of these.
(a) 110°, 110°, 70°
(c) 70°, 110°, 110°
70°
А
N
B​

Answer 1

Answer:

b option

Step-by-step explanation:

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Answer 2

Given: Three angles of a quadrilateral are 75°, 90° and 75°.

Let the fourth angle be x.

Using angle sum property of quadrilateral,

75°+90°+75°+x=360°⇒240°+x=360°

⇒x=360°−240°⇒x=120°

So, the measure of  the fourth angle is 120°

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