Question

Confused on this work

Answer 1

We know that :

⊕ Sum of the interior angles in a Pentagon should be equal to 540°

⇒ x° + (2x)° + (2x)° + 90° + 90° = 540°

⇒ (5x)° = 540° - 180°

⇒ (5x)° = 360°

`\sf{\implies x^(\circ) = (360^(\circ))/(5)}`

⇒ x° = 72°