orthocenter and circumcenter
False
No. It's not possible to start at one vertex of the triangle and proceed to the midpoint of the opposite side, by way of a straight path that takes you outside of the triangle.
You find the orthocenter by constructing the altitudes from the vertices in a triangle. If the triangle is obtuse, the orthocenter will fall outside the triangle. If the triangle is acute, the orthocenter will fall on the inside of the triangle. If the triangle is a right triangle, the orthocenter will lie on a vertix.
No way! An easy example is the centroid and circumcenter of a right-angle triangle. Circumcenter will be exactly on the middle of the hypotenuse which obviously cannot be the centroid. Centroid is the point where all three lines are connecting all the three vertices and the middle of the line opposite the respective vertex. Circumcenter is the center of the circle passing through all the vertices. As it is known, a right-angle triangle will always fall within a semicircle, meaning the circle center will always be on the middle of the hypotenuse.
Its interior.
Its centroid.
orthocenter and circumcenter
Its "incenter" will not fall outside the triangle, or outside the base of the triangle.
Every point in the plane outside the triangle can fall there!
It doesn't ever fall outside of a triangle.
A point outside the triangle may.
It will, if the triangle is obtuse.
When the triangle is obtuse.
The orthocenter may fall outside of a triangle. The orthocenter usually lies within the inside the triangle. However this is only the case if the triangle is acute.
An obtuse angled triangle.
In an obtuse angled triangle, two of them will.