Angle ABC is straight, angle DEK is 20% of angle ABC. Determine the magnitude of the angle MON

univerkov | June 24, 2021 | education

Angle ABC is straight, angle DEK is 20% of angle ABC. Determine the magnitude of the angle MON, which is equal to the arithmetic mean of the magnitude of the angles ABC and DEK

Angle ABC straight means 90 degrees.

Angle DEK = 90 degrees * 20% = 90 degrees * 0.2 = 18 degrees.

Find the arithmetic mean between the angles ABC and DEK. We get (90 + 18) / 2 = 54 degrees.

And this was what was required to be found. Angle MON = 54 degrees.

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