Question

find the value of y in the following figures.

​

Answer 1

Answer:

All the four angles form a complete angle (aka 360°)

=> 50° + 40° + 130° + (2y + 10)° = 360°

=> 360° = 220° + (2y + 10)°

=> 360° - 220° = (2y + 10)°

=> 140° = (2y + 10)°

=> 140° - 10° = 2y

=> 130° = 2y

=> 2y = 65°

Therefore the required answer is 65°

Hope this helps you...

Answer 2

Given :

• (2y + 10)°
• 50°
• 40°
• 130°

To find :

• Value of x

According to the question,

→ 2y + 10° + 50° + 40° + 130° = 360°

[ Reason : Complete angle ]

→ 2y + 230° = 360°

→ 2y = 360° - 230°

→ 2y = 130°

→ y = 130° ÷ 2

.°. y = 65°

So,the value of x is 65°....