Identifying Triangles by Angles

Classify this triangle by its angles

• Acute

• Obtuse

• Equilangular

• Right

A farmer (Coach Haggard) wants to build a triangular fence around a pasture with one angle measuring 90 degrees. What type of triangle should Coach Haggard use build the fence?

• Acute Triangle

• Right Triangle

• Obtuse Triangle

• Circle

What kind of Triangle is this?

• Acute Triangle

• Right Triangle

• Obtuse Triangle

A kite enthusiast (Alyssa) is designing a new kite and wants to use a type of triangle that has three angles measuring less than 90 degrees. What type of triangle should Alyssa use for the kite design?

• Acute Triangle

• Right Triangle

• Obtuse Triangle

A chef (Jose) is creating a new dessert and wants to use a triangular plate with three angles measuring less than 90 degrees. What type of triangle should Jose use for the plate?

• Acute Triangle

• Right Triangle

• Obtuse Triangle

• A Dirty Triangle Plate

I CAN: Identify and describe commonalities and differences between types of triangles based on angle measures (equiangular, right, acute, and obtuse triangles).

• I can

• I definitely can

What type of triangle is this?

• Right, Equilateral Triangle

• Obtuse, Isosceles Triangle

• Acute, Equilateral Triangle

• Acute, Scalene Triangle

Acute triangles are triangles with only acute angles inside.

Select ALL the acute triangles below.

(There are 2 correct answers)

• 
• 
• 
• 

A triangle has angle measurements of 26°, 59°, and 95°. What kind of triangle is it?

• acute triangle

• right triangle

• obtuse triangle

• none of the above

Find the measure of the missing angle.

• 90^o

• 10⁰

• 130^o

• 50^o