SOLUTION: The sum of the measures of the angles of a triangle is 180°. The second angle of a triangle is twice the measure of the first angle. The third angle is 20 more than 5 times the fi

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Question 1202051: The sum of the measures of the angles of a triangle is 180°. The second angle of a triangle is twice the measure of the first angle. The third angle is 20 more than 5 times the first. What are the measures of the three angles?
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.

Let x be the measure of the first angle, in degrees.
Then the measure of the second angle is 2x degrees,
     the measure of the third angle is (5x+20).


An equation for the sum of angles is

    x + 2x + (5x+20) = 180  degrees.


From this point, complete the solution on your own.

You are fully instructed.




Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
firstangle            u
secondangle          2u
thirdangle           5u+20
SUM                  180

You understand, and do the rest?