Triangle Inequality Theorem

True or False.
An acute triangle has 3 acute angles.

• True
• False

Tags

CCSS.4.G.A.2

True or False.
A right triangle has 2 right angles. 

• True
• False

Tags

CCSS.4.G.A.2

Classify the triangle by its angles.

• Acute Triangle
• Right Triangle
• Obtuse Triangle

Tags

CCSS.4.G.A.2

Classify the triangle by its sides. 

• Equilateral
• Scalene
• Isosceles

Tags

CCSS.4.G.A.2

Classify the triangle by angles and sides.

• Equiangular Equilateral
• Right Isosceles
• Right Scalene
• Acute Isosceles

Tags

CCSS.4.G.A.2

Which of the following sets of side lengths could produce a triangle. SELECT ALL THAT APPLY.

• 4, 4, 4

• 5, 5, 10

• 3, 6, 9

• 5, 7, 11

• 13, 5, 6

Tags

CCSS.7.G.A.2

Will these three sides form a triangle?

• yes

• no

Which set of side lengths will form a triangle?

• 3, 6, 12

• 7, 7, 14

• 9, 9, 9

• 13, 6, 7

Tags

CCSS.7.G.A.2

What is the range of possible third side measures using 10 and 15?

• 9 < x < 16

• 10 < x < 15

• 1 < x < 5

• 5 < x < 25

Measurements of 4 cm, 7 cm, and ​ (a)   form a triangle

• 6 cm
• 11 cm
• 3 cm
• 2 cm
• 12 cm

Tags

CCSS.7.G.A.2