SOLUTION: one angle of a triangle is 20 degrees. the second angles measurement is four times the third. what is the measure of the third angle?
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Question 127973: one angle of a triangle is 20 degrees. the second angles measurement is four times the third. what is the measure of the third angle?
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
one angle degrees
the second
the third
the sum of all angles in a triangle is degrees, so we will have:
.........substitute and
.........
.........
.........
.........
.........the third angle
....the second angle
check:
.........
.........
.........
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