[color=#000000]Recall that 3 or more lines are said to be concurrent if and only if they intersect at exactly 1 point. [/color]
The point [i][b]O[/b][/i] you see is said to be the [b]orthocenter[/b] of the triangle. What do you notice? What do you wonder? Describe!
Is it possible for the [b]orthocenter[/b] of a triangle to lie [b]INSIDE THE TRIANGLE?[/b] If so, under what condition(s) do/does this occur?
Is it possible for the [b]orthocenter[/b] of a triangle to lie [b]ON THE TRIANGLE ITSELF? [/b] If so, under what condition(s) do/does this occur?
Is it possible for the [b]orthocenter[/b] of a triangle to lie [b]OUTSIDE THE TRIANGLE? [/b] If so, under what condition(s) do/does this occur?
Without Googling, how would you define the term [b]ORTHOCENTER OF A TRIANGLE? [/b]Describe.