Does It Make a Triangle

Which of these lengths CANNOT represent the sides of a triangle?

• 32, 34, 60

• 28, 30, 58

• 13, 20, 27

• 2, 4, 5

Which set of side lengths will make a triangle?

• 6, 8, 13

• 7, 9, 18

• 7, 7, 14

• 2, 6, 9

What is the missing angle?

• 90°

• 87°

• 80°

• 88°

How many triangles exist with the following angle measures?
80°, 50°, 50°

• No triangle exists with the given angle measures.

• More than one unique triangle exists with the given angle measures.

• Exactly one unique triangle exists with the given angle measures.

• m∠C < m∠E
• m∠E > m∠D
• m∠D < m∠C
• m∠E > m ∠C

Which set of side lengths will NOT make a triangle?

• 3, 4, 5

• 1, 3, 4

•  3, 5, 7

• 2, 8, 9

Does a triangle with these side lengths exist?
33, 16, 17

• Yes

• No

• I don't know.

Find the missing angle.

• 29° 

• 39° 

• 49° 

• 59° 

If 2 of the angles of a triangle are 30 and 70 degrees, the third angle measures...

• 80

• 100

• 60

• 90

How many triangles exist with the given angle measures?  55°, 45°, 90°

• No triangle exists

• Exactly one unique triangle exists

• More than one triangle exists