Question

What is the value of x.

Answer 1

Answer:

<U+<V +< W = 180°[sum of interior angle of a triangle is 180°]

3x+9° +30° + 24° = 180°

3x + 45° = 180°

3x = 180° -45° = 135°

x = 135/3

x = 45°

Answer 2

THEOREM:

• Angle sum property —: The sum of interior angles of a triangle is 180°.

ANSWER:

By angle sum property,

∠U + ∠V + ∠W = 180°

• 3x - 9° + 30° + 24° = 180°
• 3x + 45° = 180°
• 3x = 180° – 45°
• 3x = 135°
• x = 135/3
• x = 45°

So, Correct choice - [C] 45°.