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Answer:
Answer in attachment pls see
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Answer :
Solution :
Given :
To Find :
Using this concept , we can find the value of x. So, we will add all the angles and put equal to 180° . As we know sum of all angles of triangle will equal to 180° . Then, By simplifying we will get the value of x.
Let's do,
a) For triangle ABC.
➩ x + 2x° + (x+6)° = 180°
➩ x + 2x° + x+6° = 180°
➩ 4x + 6° = 180°
➩ 4x = 174°
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b) For ∆LMN.
➩ 3x° + 2x°+ x° = 180°
➩ 6x = 180°
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c) For ∆DEF.
➩ (x+3)°+ (x+4)°+ (x+2)° = 180°
➩ x+3°+ x+4°+ x+2° = 180°
➩ 3x + 9 = 180°
➩ 3x = 171°