Solving for Sides and Angles in Triangles

Look at the sides of this triangle. What type of triangle is this?

• Equilateral
• Isosceles
• Scalene
• Obtuse

Look at the sides of this triangle. What type of triangle is this?

• scalene
• acute
• equilateral
• isosceles

Look at the sides and angles of this triangle. Which type of triangle is pictured?

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

What type of triangle is this? 

• equilateral
• obtuse
• scalene
• isosceles

Classify by its angles.

• acute
• equiangular
• right
• obtuse

Classify the following triangle in as many ways as possible. 

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

Find the measure of the missing angle.

• 139°

• 66°

• 138°

• 116°

What should all three angles in a triangle add up to?

• 360

• 90

• 180

• 270

Acute angles mean...

• the angle is exactly 90 degrees

• the angle is less than 90 degrees

• the angle is more than 90 degrees

An equilateral triangle has...

• three angles that are congruent

• two angles that are congruent

• no angles that are congruent