Classifying Triangles by Lengths Acute Right Obtuse

What is the correct term if the triangle has one 90 degree angle?

• scalene

• acute

• obtuse

• right

Tags

CCSS.4.G.A.2

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What kind of triangle is this?

• Acute

• Right

• Obtuse

• Robot

Tags

CCSS.4.G.A.2

Which term is the classification of a triangle by an angle less than 90 degrees?

• scalene

• equilateral

• acute

• right

Tags

CCSS.4.G.A.2

An Acute Triangle has all acute angles.

• True

• False

Tags

CCSS.4.G.A.2

I know this is an acute triangle because

• there is a 90° angle

• all of the angles are less than 90 degrees

• there is an angle greater than 90° but less than 180°

Tags

CCSS.4.G.A.2

Which triangle has all three of its angles measuring less than 90°?

• Acute

• Right

• Obtuse

• Equilateral

Tags

CCSS.4.G.A.2

Which triangles are acute triangles?

• 
• 
• 
• 

Tags

CCSS.4.G.A.2

Select all acute triangles.

• 
• 
• 
• 

Tags

CCSS.4.G.A.2

Which would be the best classification for the triangle shown?

• acute isosceles

• right scalene

• obtuse isosceles

• acute equilateral

Tags

CCSS.4.G.A.2

• acute

• obtuse

• right

Tags

CCSS.4.G.A.2