Question

find the value of the unknown x on the following diagrams.​

Answer 1

Step-by-step explanation:

1) x+x+x=180° (angles sum of a ∆)

3x=180°

x=180/3=60°

x+2x+90=180

3x=180-90

3x=90

x=90/3=30°

Answer 2

$\textbf{❥ᴀ᭄ɴsᴡᴇʀ}$

1. By using angle sum property of triangle

\angle A+\angle B+\angle C=\ 180\degree∠A+∠B+∠C= 180°

x\ +x+x\ =\ 180\degreex +x+x = 180°

\ 3x\ =\ 180\degree 3x = 180°

x\ =\ \frac{180}{3}x = 180/ 3

x\ =\ 60\degreex = 60°

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2. ∠A+∠B+∠C = 180°

2x\ +90\degree+x\ =\ 180\degree2x +90°+x = 180°

3x\ =\ 180\degree-90\degree3x = 180°−90°

x\ =\ \frac{90}{3}x = 90/3

x=\ 30\degreex= 30°\angle A\ =\ 2x\ =\ 2\times30\

=60\degree∠A = 2x = 2×30 =60°

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