Classify Triangles and Triangle Sum

Find the measure of the missing angle.

• 90^o
• 10⁰
• 130^o
• 50^o

Find the measure of each angle indicated. 

• 139°
• 66°
• 138°
• 116°

What is an "Acute" Angle?

• Angle that measures 180
• An Angle that measures 90
• An angle that measures more than 90
• An angle that measures less than 90

Find the missing angle. 

• 151
• 147
• 118
• 62

Classify by angle.

• Obtuse
• Right
• Acute

Classify by side.

• Isosceles
• Scalene
• Equilateral

Classify by angle

• Equilateral
• Right
• Acute
• Obtuse

Classify by side length

• Acute
• Isosceles
• Right
• Equilateral

Which type of triangle is pictured?

• Equilateral Triangle
• Right Isosceles Triangle
• Obtuse Scalene Triangle
• Obtuse Equilateral Triangle

Name this triangle

• Acute, Scalene
• Obtuse, Scalene
• Right, Isosceles
• Acute, Equilateral