Question

The measures of the three angles of a triangle are given. Find the value of x and state whether the triangle is acute, obtuse, or right.
x + 10, x − 20, x + 25

I got x is 55 and it is an acute angle. Is that correct?

Answer 1

checking:

x + 10 + x − 20 + x + 25 = 180
3x = 165
x = 55 , you had that

so the 3 angles are:
65°, 35° , and 80°

You said "it is an acute angle", you must have meant " it is an acute-angled triangle"

Answer 2

80 40