Asked by derek

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

1)isosceles triangle
2)right triangle
3)acute triangle
4)equiangular triangle
Answered by drwls
This looks like a question posted earlier today, except in this case 7x + 15 has replaced 7x - 15.

Add up all angles, set the sum equal to 180, and solve for x. Then compute the angles and decide what kind of triangle it is. This time it WILL be one of the 4 choices. Last time it wasn't.
Answered by steph
acute triangle
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