triangles

What type of angle is shown?

• acute
• obtuse
• right
• straight

What type of angle is this? 

• acute
• obtuse
• right
• big

Name this triangle.

• A
• B
• C
• D

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

Classify the following triangle in as many ways as possible. 

• Right, Equilateral
• Obtuse, Scalene
• Obtuse, Equilateral
• Right, Scalene

Which type of triangle is pictured?

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

How many acute angles must an acute triangle have?

• 2
• 1
• 4
• 3

An angle whose measure is exactly 90 degrees.

• acute
• vertical
• right
• straight

Find the measure of each angle indicated. 

• 139°
• 66°
• 138°
• 116°

Find the measure of the missing angle.

• 90^o
• 10⁰
• 130^o
• 50^o