Question

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Given that two sides of a triangle have lengths 9 and 9, which of the following are possibilities for the third side? Select all that apply.

0



18



20



15



18.1



1



17.9



4

Answer 1

Answer:

• 15, 1, 17.9, 4

Step-by-step explanation:

As per triangle inequality theorem, the third side must be greater than zero but less than 9 + 9 = 18

Possible choices are:

• 15, 1, 17.9, 4

Answer 2

Answer:

9 and 9

Triangle theorem

if x+y <= z, then it cannot be a triangle.

9+9 is 18

so 9+9 <= 18

so the answer is 15, 18 ,4,17.9,1,0.

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