What type of triangle is shown below?

A.) Equiangular

B.) Right Isosceles

C.) Acute Scalene

D.) Obtuse Scalene

**Identify the measure of the third angle of the triangle.**

**Angles of a triangle add up to 180°.**

180 - (110 + 28) {subtracted given angles from 180° to determine missing angle}

= 180 - 138 {worked inside parentheses}

= 42 {subtracted}

**Angles of triangle are 28°, 42°, and 110°**

**If no angles are congruent, then none of the sides are congruent. If no sides are congruent, it is scalene.**

If an angle is larger than 90°, it is an obtuse triangle.

If an angle is larger than 90°, it is an obtuse triangle.

**D.) Obtuse Scalene**

__Ask Algebra House__