Question

The measures of the angles of a triangle can be represented by the expressions x degrees, quantity of x plus twenty degrees, and two times x degrees. Which word best describes the triangle?
Answer

The triangle is an acute triangle.

The triangle is an obtuse triangle.

There is not enough information to classify the triangle.

The triangle is a right triangle.

Answer 1

Its a triangle so all the angles have to add up to 180 degrees so
x + (x + 20) + 2x = 180

which is the same as 4x + 20 = 180

therefore 4x = 160

from that you can get x = 40,

since the biggest angle is 2x which is 80 degrees the triangle has to be acute