The sum of the degree measure of angle A and two adjacent angles is 210. Calculate the degree measure of angle A.
| December 1, 2020 | education
1) let x angle A
2) the degree measure of adjacent angles is 180’s
3) compose the equation
x + 180-x + 180-x = 210
x + 360-2x = 210
360’s = 210
x = 360-210
x = 150 (degree measure of angle A)
Answer: 150 degrees
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