Question

Find the value of unknown x in the following figure: *
1 point
Captionless Image
(a) 10°
(b) 15°
(c) 20°
(d) 25°

Answer 1

Given : a figure

To Find : value of unknown x

(a) 10°

(b) 15°

(c) 20°

(d) 25°

Solution:

x  and vertically opposite of 3x + 10  and 90° forms a linear pair

Vertically opposite angle are equal

=> x + 3x + 10° + 90°  = 180°

=> 4x + 100° = 180°

=> 4x = 80°

=> x = 20°

Value of x  =  20°

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Answer 2

x value is 20 degree

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