Question

Two angle of a linear pair are in the ratio 4:5.find the measure of each of these angles​

Answer 1

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Let the angles be 4x & 5x.

It form a linear pair so its sum is 180°

$\tt{\Rightarrow}$ 4x + 5x = 180

$\tt{\Rightarrow}$ 9x = 180

$\tt{\Rightarrow}$ x = $\frac{180}{9}$

$\tt{\Rightarrow}$ x = 20°

.°. Angles are 80° & 100°

Answer 2

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let angles be 4x and 5x

4x + 5x = 180 \: (linear \: pair)4x+5x=180(linearpair)

9x = 180°9x=180°

x = \frac{180°}{9}x=

9

180°

x = 20x=20

\huge{hope \: it \: helps}hopeithelps