A triangle may not have(a) an altitude    (b) can have at most 3 altitudes (c) has three altitudes               (d) has only one altitude

Show that the altitudes of a triangle are concurrent

Prove that the altitudes of a triangle are concurrent.

An equilateral triangle if its altitude is 3.2 cm.

A median and an altitude of an obtuse-angled triangle lie outside the triangle. It is true ?

A balloon moving in a straight line passes vertically above two points A and B on a horizontal plane 300 ft apart. When above A it has an altitude of 30^(@) as seen from A. The distance of B it has an altitude of 30^(@) as seen from A. The distance of B from the point C where it will touch the plane is

If in a triangle PQR; sin P, sin Q, sin R are in A.P; then (A)the altitudes are in AP (B)the altitudes are in HP (C)the altitudes are in GP (D)the medians are in AP

Find the area in square centimetres of the triangle whose base and altitude are as under: (i) Base = 15 cm, altitude = 8 cm (ii) Base = 1.5 m, altitude = 0.8 m

In an equilateral triangle with side a, prove that the altitude is of length (a sqrt3)/2

Find the area of an equilateral triangle having altitude h\ c mdot

If the altitudes of a triangle are in A.P,then the sides of the triangle are in