Acute, Right, or Obtuse?

The lengths of a triangle are given below. Is the the triangle obtuse, acute, or right?
4, 5, 6

• right
• obtuse
• acute

Tags

CCSS.4.G.A.2

Given the lengths 4", 7", 10", classify the triangle formed and or state that no triangle CAN be formed.

• No triangle

• Acute triangle

• Right triangle

• Obtuse triangle

Tags

CCSS.7.G.A.2

Given the lengths 6", 8", 10", classify the triangle formed and or state that no triangle CAN be formed.

• No triangle

• Acute triangle

• Right triangle

• Obtuse triangle

Tags

CCSS.7.G.A.2

Given the lengths 8", 15", 17", classify the triangle formed and or state that no triangle CAN be formed.

• No triangle

• Acute triangle

• Right triangle

• Obtuse triangle

Tags

CCSS.7.G.A.2

Given the lengths 10", 15", 17", classify the triangle formed and or state that no triangle CAN be formed.

• No triangle

• Acute triangle

• Right triangle

• Obtuse triangle

Tags

CCSS.7.G.A.2

a = 2.1, b = 7.2,
c = 7.5
Is this a right triangle?

• yes 
• no

Tags

CCSS.8.G.B.8

Which set of side lengths form a right triangle?

• 3, 4, 7
• 33, 56, 65
• 66, 72, 97
• 10, 15, 25

Tags

CCSS.8.G.B.8

If three sides of a right triangle are 9, 40, and 41, which side is the hypotenuse?

• 9
• 40
• 41

Tags

CCSS.HSG.CO.C.10

Isabella has sticks that are 10cm, 11cm, and 13cm long.  Can she place the sticks together to form a right triangle?  Justify your answer.

• No, because 10+11 does not equal 13
• No, because 100+121 does not equal 169
• Yes, because there is a small side, medium side and long side
• Yes, because a triangle has 3 sides

Tags

CCSS.HSG.SRT.C.8

10, 12, 25

• acute
• right
• obtuse
• not a triangle

Tags

CCSS.7.G.A.2