Question

Which of the following is/are true?

• A. The length of perpendicular drawn from the vertex to the opposite side is the height or altitude of the triangle.
• B. The point of intersection of altitudes is orthocentre.
• C. Altitudes are always inside the triangle.
• D. An altitude is always perpendicular to the opposite side.

Answer 1

Answer: (A), (B), (D)

The correct options are
A The length of perpendicular drawn from the vertex to the opposite side is the height or altitude of the triangle.
B The point of intersection of altitudes is orthocentre.
D An altitude is always perpendicular to the opposite side.

Altitudes are not always inside the triangle, in case of right angled triangle altitudes are the two perpendicular sides which are not inside but on the triangle.

The point of intersection of altitudes is orthocentre.