Acute, Obtuse and Right Triangles

In an ______________ triangle, all three angles are less than 90 degrees.

• acute

• right

• obtuse

• 360 degrees

Which type of angle is pictured?

• Acute

• Right

• Obtuse

• Straight

What Type of Triangle is this?

• Right Angled triangle

• Equilateral triangle

• Isosceles triangle

• Obtuse Triangle

• Acute Triangle

Acute triangles are triangles with only acute angles inside.

Select ALL the acute triangles below.

(There are 2 correct answers)

• 
• 
• 
• 

Identify the triangle by its sides and angles

• Right Isosceles

• Right Scalene

• Obtuse Isosceles

• Obtuse Scalene

Acute triangles are triangles with only acute angles inside.

Select all the acute triangles below:

• 
• 
• 
• 

In a ____________ triangle one angle is exactly 90 degrees.

• acute

• right

• obtuse

• 360 degrees

In an ___________ triangle one angle is greater than 90 degrees.

• acute

• right

• obtuse

• 360 degrees

What kind of triangle is this?

• acute

• right

• obtuse

• 360 degrees

What kind of triangle is this?

• acute

• right

• obtuse

• 360 degrees