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Mathematics 14 Online
22west:

How many triangles can be constructed with sides measuring 15 cm, 7 cm, and 5 cm? A. none B. one C. more than one

22west:

@dude

bm717:

He's going offline

22west:

Oh okay...

bm717:

No wait

bm717:

5 + 7 < 15, The sum of the lengths of any two sides of a triangle must be greater than the length of the third side, so the answer is none

vaporeon246:

nice job catching that mistake @bm717 😊

22west:

So more than likely more than one...

bm717:

The answer is A

22west:

None?? Why none????

bm717:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @bm717 5 + 7 < 15, The sum of the lengths of any two sides of a triangle must be greater than the length of the third side, so the answer is none \(\color{#0cbb34}{\text{End of Quote}}\)

vaporeon246:

or 12 less than 15

bm717:

Right ^

vaporeon246:

5 + 7 = 12 15 greater than 12

Angle:

it's easier to understand if you try fiddling with sticks of those sizes and try to make a triangle: there is no way to get all the ends of the sticks to touch each other |dw:1519095531225:dw|

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