Sum of angles of a hexagon is 720°.
Explanation:
- The sum of the six angles of a hexagon is 720°. Here it is given that two angles are 90° and the rest are 135°.
- Adding all this, we get 720° as shown below.
⇒ 2 × 90° + 4 × 135° = 180° + 540° = 720°
- So the polygon is a hexagon.
