Question

Please tell me this question with step by step explaination​

Answer 1

Answer:

$\huge \red{x = 40}$

$x + 2x + x + 20 = 180 (sum \: \\ of \: interior \: angle \: of \: triangle)$

$4x + 20 = 180$

$4x = 180 - 20$

$4x = 160$

$x = \frac{160}{4}$

$x = 40$

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Answer 2

Answer:

x = 40 degrees

Step by step explaination:

Applying angle sum property in Triangle ABC

=> Angle BAC + Angle B + Angle C = 180 degrees

=> 2x + x + ( x + 20) = 180 degrees

=> 4x + 20 = 180

=> 4x = 160

=> x = 40 degrees

To find Angle EAB and Angle FAC, it is given that line EF || BC

Therefore, Angle EAB = Angle B = x

=> x = 40 degrees

and, Angle FAC = Angle C = x + 20

=> 40 + 20 = 60 degrees

Hope it'll help you.