Identify Triangles by Angle Measures

Find the unknown angle measure.

Two angles of a triangle measure 40° and 70°. What is the measure of the third angle of the triangle?

Which type of triangle is pictured?

• Equilateral Triangle

• Right Isosceles Triangle

• Obtuse Scalene Triangle

• Obtuse Equilateral Triangle

Find the measure of the missing angle.

• 90^o

• 10⁰

• 130^o

• 50^o

Classify the triangle based on the angle measures:

• Acute

• Obtuse

• Right

Given three angle measures, how many triangles can you create?

• One unique triangle

• Multiple triangles

• No triangles

A triangle with angle measures of 45°, 55°, and 80° ​ (a)   possible.

• is

• is not

Find the indicated value from the image.

Mathematical Equivalence

ON

• A
• B
• C
• D

Classify the triangle based on the angle measure:

• Acute

• Obtuse

• Right