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How many triangles are there whose perimeter is 24 with side lengths x, y, z all integers? If triangles are congruent, they are considered equal.

 
 Jan 11, 2021
 #1
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We can list them:

(2,11,11)

(3,10,11)

(4,9,11)

(5,9,10)

(6,7,11)

(6,8,10)

(7,7,10)

(7,8,9)

(8,8,8)

 

9 possible triangles

 
 Jan 11, 2021
 #2
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Sorry,

I forgot to mention. The answer choices were 11, 12, 13, 14, 15

 
Guest Jan 11, 2021

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