Question

Draw an acute-angled triangle, ∆CID and its three altitudes.

Answer 1

An acute-angled triangle is a triangle in which all the angles are less than 90°.
An altitude of a triangle is the perpendicular drawn from a vertex to the opposite side of the triangle.
Given below is the figure of an acute-angled triangle, ∆CID, with its three altitudes (CP, IQ and DR)