How many altitudes does a triangle have?
A. 1

B. 3

C. 6

D. 9

ABCD is a quadrilateral. Is AB + BC + CD + DA < 2 (AC + BD)?

The lengths of two sides of a triangle are 12 cm and 15 cm. Between what two measures should the length of the third side fall?

ABCD is a quadrilateral. Is AB + BC + CD + DA > AC + BD?

If we join a vertex to a point on opposite side which divides that side in the ratio 1:1, then what is the special name of that line segment?

In ∆ABC, AD is the bisector of ∠A meeting BC at D, CF ⊥ AB and E is the mid-point of AC. Then median of the triangle is

How many altitudes does a triangle have?

Verify by drawing a diagram, if the median and altitude of an isosceles triangle can be same.

AM is a median of a triangle ABC. Is AB + BC + CA > 2AM? (Consider the sides of triangles ABM and AMC)

Draw rough sketches for the following:

(a) In ΔABC, BE is a median.

(b) In ΔPQR, PQ and PR are altitudes of the triangle.

(c) In ΔXYZ, YL is an altitude in the exterior of the triangle.