Question

1. Find the value of unknown angles.
​

Answer 1

Step-by-step explanation:

90° + 2x + x = 180° ( Angle sum property )

3x = 180° - 90° ( Linear pair )

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

x = 30°

2x = 2 × 30° = 60°

∴ 90° + 60° + 30° = 180°

Please mark me as brainliest answer :(.