Question

Please help!!

Which of the following best describes triangle GFH?

A. Isosceles triangle
B. Acute triangle
C. Scalene triangle
D. Right triangle

Answer 1

C. Scalene triangle

Explanation:

What I would do is add all of the angles to 180 and then solve for x.

6x + 10 + 7x + 15x + 2 = 180

28x + 12 = 180

28x = 168

x = 6

Then, plug in 6 for each expression to find each angle

6(6) + 10 = 46

7(6) = 42

15(6) + 2 = 92

Since none of the angles are equal and one of the angles is over 90 degrees, triangle GFH is a scalene triangle