Given an angle of 1-63 degrees, an angle of 2-77 degrees, an angle of 4-177 degrees, find an angle of 3
| September 16, 2021 | education
As you know, the sum of the angles of a quadrilateral is 360 °, therefore, to determine the value of one of the angles, it is necessary to subtract the sum of three angles from the sum of all 4 angles.
In this case, the sum of the three known angles is:
63 ° + 77 ° + 177 ° = 140 ° + 177 ° = 317 °.
In this case, the value of the third angle will be:
360 ° – 317 ° = 43 °.
Answer: 43 °.
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