SOLUTION: A triangle has one angle that measures 74°. The second angle is half the measure of the first angle. What is the measure of the third angle?

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Question 548233: A triangle has one angle that measures 74°. The second angle is half the measure of the first angle. What is the measure of the third angle?
Answer by mathie123(224) About Me  (Show Source):
You can put this solution on YOUR website!
One important thing to remember is that all angles sum to 180 degrees.
Let x be the measure of the third angle.
Since the second angle is half of the first angle, this is just saying the second angle is 75%2F2=37.5

So we have the sum of all angles is 180:
75%2B37.5%2Bx=180
Now just solve for x (I will let you do the rest, let me know if you are still unsure)