Geometry Classwork- Lesson 4.1 Classifying Triangles

True or false: Every equilateral triangle is acute.

• true
• false

True or false: Every right triangle is isosceles.

• true
• false

True or false: A triangle can be right and obtuse.

• true
• false

Classify the triangle as acute, equiangular, right, or obtuse.

• acute
• equiangular
• right
• obtuse

Classify the triangle as acute, equiangular, right, or obtuse.

• acute
• equiangular
• right
• obtuse

Classify the triangle as acute, equiangular, right, or obtuse.

• acute
• equiangular
• right
• obtuse

Classify the triangle as acute, equiangular, right, or obtuse.

• acute
• equiangular
• right
• obtuse

Classify the triangle as scalene, isosceles, or equilateral. ∆ABD

• scalene
• isosceles
• equilateral

Classify the triangle as scalene, isosceles, or equilateral. ∆BCD

• scalene
• isosceles
• equilateral

Classify the triangle as scalene, isosceles, or equilateral. ∆ABC

• scalene
• isosceles
• equilateral