Question

Q4. Find the value of Y in the following figure.​

Answer 1

Answer:

B] 65°

Step-by-step explanation:

Concept used:

The Sum of all angles around a point is always 360°.

Solution:

Applying the above concept,

50° + 40° + 130° + (2y + 10)° = 360°

⇒ 90° + 130° + 2y + 10° = 360°

⇒ 230° + 2y = 360°

⇒ 2y = 360° - 230°

⇒ 2y = 130°

⇒ y = 65°

∴ The value of y in the given figure = 65°

KNOW MORE:

Angle sum Property states that sum of all angles in a triangle is always 180°.

This is known as Angle Sum Property.

Similarly in a quadrilateral, sum of all angles is equal to 360°.