Question

sum of angles x, (x+20) is a straight angle​

Answer 1

Answer:

4x=180+20

4x=160

x=40°

Answer 2

Given data:

The sum of the angles x and x + 20 is a straight angle

To find:

The value of x

Step-by-step explanation:

• Before we solve the problem, we must know that, a straight angle measures 180°.

• Since this angle looks like an straight line, its name is so.

Since the sum of tbe angles x and x + 20 is a straight line, we can say that,

x + x + 20 = 180 [ a straight angle = 180° ]

⇒ 2x + 20 = 180

⇒ 2x = 180 - 20

⇒ 2x = 160

⇒ x = 80

Final Answer:

The value of x is 80 degrees or 80°.