Question

(iv)
Х
X + 10°
X - 10°​

Answer 1

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★TO FIND:-

• ALL ANGLES OF TRIANGLE.

★GIVEN:-

• THREE ANGLES ARE--

• x , x + 10 , x- 10

★ LET'S DO IT:-

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Sum of all angles of triangle = 180°

So,

$: \longrightarrow \: x + ( x- 10) + (x + 10) = 180°$

$\: \: \: \: \: \: \: \: \: \: \: \: \longmapsto \: x \: + x - 10 + x + 10 = 180 \degree$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \longmapsto \: 3x = 180$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \huge{ \boxed{ \boxed{ \boxed{ \underline \purple{x = 60\degree}}}}}$

Therefore,

x = 60°

x - 10 = 60° -10 = 50°

x + 10= 60 + 10= 70°

HOPE IT HELPS