Triangles Review

What is the range of values of x for a triangle's third side given side measures of 8 and 15?

• between 8 and 15
• between 7 and 23
• less than 7, greater than 23

What is the range of values of x for a triangle's third side given side measures of 4 and 12?

• between 8 and 16
• less than 4, greater than 12
• between 4 and 12

Given are the lengths of two sides of a triangle. Find the range of lengths for the third side. 7 ft, 13 ft

• more than 6 but less than 20
• more than 20 but less than 6
• less than 6 but more than 20

Given are the lengths of two sides of a triangle. Find the range of lengths for the third side. 7 mm, 4 mm

• 3 < x < 11

• 4 < x < 7

• 7 < x < 4

• 11 < x < 3

Will these line segments form a triangle?

• yes

• no

Does a triangle with these side lengths exist?
15, 12, 9

• Yes
• No
• I don't know.

If the longest side of the triangle was 10. Then the two shorter sides must have a sum that is ....?

• any length
• equal to 10
• greater than 10
• less than 10

Compare QT and ST

Select the correct answer

• A
• B
• C
• D

Using the hinge theorem, we can say that Angle 1 _____ Angle 2.

• Less than
• Greater than
• Equal to 
• Half of