Triangles

We can construct a triangle with length of its sides as 9 cm, 7 cm and 16 cm.

If two sides and an angle of one triangle are equal to two sides and an angle of another triangle, then the two traingles must be congruent.

Choose the correct statement [CCE 201G]

ABC is an isosceles triangle with AB = AC. Altitudes are drawn to the sides AB and AC from vertices B and C. One altitude CF is found to be 4 cm. If BC = 5 cm. Find EC, where BE is altitude to side AC.