Homework Help: math

Posted by Anonymous on Thursday, May 7, 2009 at 9:43pm.

if the measure of the angles of a traingle are represented by 2x, 3x-15, and 7x+15, the traingle is

1 an isosceles triangle
2 a right triangle
3 an acute triangle
4 an equilateral triangle

math - RickP, Thursday, May 7, 2009 at 10:16pm
The sum of the measures of the three interior angles of a triangle is 180 degrees. So:
2x + 3x - 15 + 7x + 15 = 180
12x = 180
x = 15

So the measures of the angles are 30, 30, and 120.

That should be enough for you to answer the question.

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