Answer:
Step-by-step explanation:
Every Triangle has three altitudes. These are lines the go from an angle's point of the two lines meeting. The altitude goes from the the point of meeting to the side opposite. The altitude and the side opposite meet at right angles.
There are three such altitudes. They always have 1 point where they meet.
That meeting place is called the orthocenter.
There are 3 numbers as such.
First lets list all the factors of 12
1,2,3,4,6,12
now lets see which are multiples of 3
3,6 and 12 are multiples of 3
therefore we are left with
1,2 and 4
The Final Answer Is c. X-17
The numbers -9 and -4 add up to -13 and multiply to get 36
I hope this helped :)