Question

Geometry questions please help me

Answer 1

x = 65 degrees

Obtuse Triangle

Explanation:

By the Triangle Exterior Angle Theorem, which states that the exterior angle of a triangle is the sum of the two opposite angles:

`3x - 20 = x + 110`

Solve for x:

`3x - x = 110 + 20\\2x = 130\\x = 65`

So, x = 65 degrees

Because one of the angles are greater than 90 degrees, it is an obtuse triangle.