10 a say me ans I think it’s easy for you

x = 90 degrees

Step-by-step explanation:

Sum of angles on a line = 180

=> 25 + x + 65 = 180

=> x + 90 = 180

=> x = 90

x = 90°

Step-by-step explanation:

10) a)

Angles on a straight line add up to 180°

⇒ 25 + x + 65 = 180

⇒ x + 90 = 180

⇒ x = 180 - 90

⇒ x = 90°

1/800 is the right answer