Which set of measurements would NOT form a triangle?

a) 19, 16, 18

b) 9, 8, 16

c) 6, 9, 18

d) 8, 6, 9

Question

Which set of measurements would NOT form a triangle?

a) 19, 16, 18

b) 9, 8, 16

c) 6, 9, 18

d) 8, 6, 9

anonymous · Answer

try drawing them lol

kainui · Answer

one side has to be smaller than the sum of the other two sides and the sum of two sides has to be at least as long as one side.

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what happens as x decreases in that triangle on the left? What happens as y increases in the triangle on the right?

radar · Answer

Look closely at c) and can you visualize such a triangle?

anonymous · Answer

true^^^

radar · Answer

Note that if the included angle between the 6 and 9 side was 180 degree only a side < 15 could be used, how is the 18 gonna fit?