I°) Definition of height
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Is any triangle ABC. The line, which passes through a vertex and perpendicular to the opposite side is the height of this triangle
(AH) is the high end of A on the side [BC]. |
II°) The orthocenter of a triangle
| - The three altitudes
of a triangle are concurrent at one point called H
orthocenterof the triangle.
- If the triangle has three acute angles, the orthocenter is located inside the triangle. - If the triangle has an obtuse angle, the orthocenter is outside. - If the triangle is rectangular, the orthocenter coincides with the right angle. |
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