Classify Triangles & Triangle Inequality Theorem

The sum of the interior angles in a triangle is ...

• 360 degrees

• 180 degrees

• 90 degrees

• 540 degrees

Tags

CCSS.8.G.A.5

If two angles in a triangle are  $45\degree$  and  $\ 75\degree$ , what is the measure of the third angle?

•  $75\degree$  

•  $90\degree$  

•  $60\degree$  

•  $70\degree$  

Tags

CCSS.8.G.A.5

*Select all that apply*

Equilateral triangles ...

• have three angles that are the same measure

• have three side lengths that are the same measure

• have only acute angles

• have three angles that are each 60 degrees

Tags

CCSS.4.G.A.2

A right triangle has ...

• one right angle

• three acute angles

• two right angles

• three obtuse angles

Tags

CCSS.4.G.A.2

How do you classify this triangle?

• acute

• obtuse

• right

• scalene

Tags

CCSS.4.G.A.2

What is the measure of angle a?

• 180

• 60

• 30

• 50

Tags

CCSS.8.G.A.5

What is the measure of the missing angle?

• 80

• 60

• 50

• 70

Tags

CCSS.8.G.A.5

The triangle inequality theorem states that the sum of any two sides must be ________________ the length of the third side.

• less than

• greater than

• equal to

• less than or equal to

Tags

CCSS.HSG.CO.C.10

Three line segments have measures of 12 cm, 7 cm, and 5 cm. Will the segments form a triangle?

• Yes

• No

Tags

CCSS.7.G.A.2

Three line segments have measures of 9 cm, 5 cm, and 6 cm. Will the segments form a triangle?

• Yes

• No

Tags

CCSS.7.G.A.2