Calculate the Unmarked Angle: Finding the Missing Value in a 160° Ray Diagram

Calculate the size of the unmarked angle:

160

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Find the value of the empty angle
00:03 A straight angle equals 180
00:06 Therefore subtract the known angle from it to find the empty angle
00:09 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

Calculate the size of the unmarked angle:

160

2

Step-by-step solution

The unmarked angle is adjacent to an angle of 160 degrees.

Remember: the sum of adjacent angles is 180 degrees.

Therefore, the size of the unknown angle is:

180−160=20 180-160=20

3

Final Answer

20

Practice Quiz

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Indicates which angle is greater

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