Obtuse Right Acute Triangles

An angle that measures less than 90°

• Acute

• Obtuse

• Right

• Straight

What is the measurement of a right angle?

• 70

• 80

• 90

• 180

What is an "Acute" Angle?

• Angle that measures 180

• An Angle that measures 90

• An angle that measures more than 90

• An angle that measures less than 90

An acute triangle has ​ (a)   acute angles in it.

• three

• two

• one

• zero

An OBTUSE triangle has _____________.

• 1 obtuse angle

• 2 obtuse angles

• 3 obtuse angles

• no obtuse angles

Acute triangles are triangles with only acute angles inside.

Select ALL the acute triangles below.

(There are 2 correct answers)

• 
• 
• 
• 

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

• acute

• right

• obtuse

• 360 degrees

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

• acute

• right

• obtuse

• 360 degrees

A triangle has angle measurements of 32°, 137°, and 11°. What kind of triangle is it?

• acute

• right

• obtuse

• 360 degrees

In a ____________ triangle one angle is exactly 90 degrees.

• acute

• right

• obtuse

• 360 degrees