Question

Plz help me understand. The lesson didn't make sense

The lengths of two sides of a triangle are 12 inches and 4 inches. Which of the following dimensions is the third side of this triangle?

9 inches
8 inches
7 inches
6 inches

Answer 1

Hmmm

Answer 2

Third scale means the length of the missing side of the triangle

Answer 3

in a triangle, sum of any two sides is greater than the third side

x+y>z
x+z>y
y+z>x

Answer 4

sooo...yeah I am still confused. I don't want the answer directly but can u plz use the numbers given lolol

Answer 5

ok , so we already know that the biggest side is 12( because all the options given are also less than 12)
so the third side should be such that , when added to 4, gives a number bigger than 12

Answer 6

And 9 is the only measurement that meets that condition.

Answer 7

uh. u just gave the answer but yet my slow brain is still confused as to why thats the answer XDXD

Answer 8

the sum of any two sides should be bigger than the third side
if the third side is 6, 6+4=10 , which is not bigger than 12
similarly 4+7=11
4+8=12
which are not bigger than 12
only when you add 9+4=13 gives a number bigger than 12

Answer 9

OMG I GET IT THANK YOU THANK YOU THANK YOU

Answer 10

7 inches

Answer 11

u r welcome ! :)