Triangle Theorem Practice

The Triangle Inequality Theorem states the sum of any two sides in a triangle must be greater than the length of the third side.

• False

• True

Tags

CCSS.7.G.A.2

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______. 

• 45°
• 90°
• 180°
• 360°

Tags

CCSS.8.G.A.5

The Opposite Side Angle Theorem says If one side of a triangle is longer than another side, then the angle opposite the longer side will be larger than the angle opposite the shorter side.

• True

• False

Tags

CCSS.HSG.CO.C.10

A triangle has one angle that measure 45° and one that measures 60°. What is the measure of the third angle?

• 135°

• 75°

• 120°

• 105°

Tags

CCSS.8.G.A.5

Find the measure of the missing angle.

• 90^o
• 10⁰
• 130^o
• 50^o

Tags

CCSS.7.G.B.5

A student is trying to construct triangles using four different sets of angles. The angles in each set are given below. Which set will form a triangle?

• 45°, 65°, 70°

• 150°, 110°, 100°

• 50°, 50°, 50°

• 90°, 90°, 90°

Tags

CCSS.8.G.A.5

Find the measure of the missing angle.

• 30^o
• 110^o
• 150^o
• 40^o

Tags

CCSS.8.G.A.5

Which of the following sets of side lengths could produce a triangle? Select ALL that apply.

• 7 ft., 4 ft, 5 ft

• 3 in, 6 in, 2 in.

• 6 cm, 6 cm, 12 cm

• 9 mm, 9 mm, 9mm

• 4 m, 6 m, 9 m

Tags

CCSS.7.G.A.2

Will these line segments form a triangle?

• yes

• no

Tags

CCSS.7.G.A.2

Can the following side measures form a triangle?
  3, 5, 8 

• Yes
• No

Tags

CCSS.7.G.A.2