4.6C Classifying triangles

An obtuse triangle has (a)   obtuse angle(s).

• exactly one
• exactly two
• three
• no

What are the attributes of an acute triangle?

• It has 3 acute angles

• It has 2 acute angles

• It has 1 acute angle

• It has no acute angles

A three sided shape with 1 right angle & 2 acute angles

• Obtuse Triangle

• Acute Triangle

• Right Triangle

• Rhombus

Classify this triangle by its angles

• Acute

• Right

• Obtuse

Harry drew the triangles shown. Which of the following correctly describes the triangles? 

• All triangles have a right angle.
• Only one triangle has an acute angle.
• All triangles have at least two obtuse angles.
• All triangles have at least one acute angles.

What type of triangle is shown?

• acute

• obtuse

• right

What type of triangle is this?

• Acute

• Right

• Obtuse

Patricia draws a triangle. She measures its angles and records the results in the table shown. What type of triangle does Patricia draw?

• Obtuse triangle, because exactly one angle is obtuse

• Acute triangle, because all its angles are acute

• Obtuse triangle, because all of its angles are obtuse

• Acute triangle, because at leas one angle is acute

A triangle has one pair of perpendicular sides and two acute angles. Is the triangle acute, obtuse, or right angle? Complete the sentence by selecting the correct answers from the drop-down menus. The triangle is​ (a)   because it has​ ​ (b)   ​

• a right triangle
• an acute triangle
• an obtuse triangle
• a right angle and two acute angles
• three acute angles
• an obtuse angle and two acute angles

Which type of triangle has perpendicular sides?

• Acute triangle

• Obtuse triangle

• Right Triangle

• None of these