Classify the triangle by its angles and by its sides. Example 2 Classify Triangles by Angles and Sides Classify the triangle by its angles and by its sides. a. b. c. SOLUTION Because this triangle has 3 angles with measures less than 90° and 2 congruent sides, it is an acute isosceles triangle. a. Because this triangle has a right angle and no congruent sides, it is a right scalene triangle. b. Because this triangle has one angle greater than 90° and no congruent sides, it is an obtuse scalene triangle. c. 1

Classify the triangle by its sides. Checkpoint Classify Triangles by Angles and Sides Classify the triangle by its sides. 4. ANSWER acute isosceles triangle 5. ANSWER acute scalene triangle 6. ANSWER obtuse isosceles triangle