Triangles

Two sides of a triangle have measures of 6 inches and 12 inches. Which measure could be the length of the third side?

• 5 in

• 6 in

• 10 in

• 18 in

9) 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

What are the possible values for the third side of the triangle if two sides are 23 & 16

• 16 < x < 23

• 7 < x < 39

• 7 > x > 39

• 8 ≤ x ≤ 38

What is the " Triangle Ineqality Theorem"? 

• The sum of the 2 Sides is > than the 3rd 
• The lengths of a triangles sides are all the same 
• An obtuse triangle 
• Something that you made up 

What is the theorem that states the sum of the lengths of any two sides of a triangle must be greater than the length of the third side?

• Pythagorean Theorem

• Law of Sines

• Triangle Inequality Theorem

• Law of Cosines

What belongs in the first box?

• 9
• 19
• 67
• 20

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

What must you do to determine if side lengths can make a triangle?

• Add the two shorter sides, answer must me less than or equal to the third side

• Subtract the largest side from any other side and the answer must be positive

• Add the two shorter sides together, answer must be larger than the third side

• Divide your largest side by one of the shorter sides, your answer has to be bigger than the remaining side.

In triangle ABC, the length of side AB is 10 inches and the length of side BC is 17 inches.  Which of the following could be the length of side AC?

• 16 inches
• 5 inches
• 32 inches
• 29 inches

The length of two sides of the triangle are known. Which of the following could be the perimeter?

• 24

• 30

• 36

• 48