Classifying 2D Figures 5.5A

Match the following triangles with their angle classification.

• Obtuse Triangle

• 
• Right Triangle

• 
• Acute Triangle

• 

What type of angle is this? 

• acute
• obtuse
• right

What type of angle is this? 

• acute
• obtuse
• right

What type of angle is this? 

• acute
• obtuse
• right

What type of lines are these?

• intersecting
• parallel
• perpendicular
• obtuse

What type of lines are these?

• intersecting
• parallel
• perpendicular
• obtuse

What type of lines are these?

• intersecting
• parallel
• perpendicular
• obtuse

• acute triangle
• right triangle
• obtuse triangle
• none of the above

When classifying a triangle by its angles, what type of triangle has one right angle? 

• acute triangle
• right triangle
• obtuse triangle
• none of the above

When classifying a triangle by its angles, what type of triangle has three acute angles? 

• acute triangle
• right triangle
• obtuse triangle
• none of the above