Question

D and E are respectively the midpoints of the sides AB and AC of a triangle ABC and BC is equal to 6 CM if DE perpendicular to BC then the length of the DE in centimetre is​

Answer 1

Step-by-step explanation:

DE can't be perpendicular it can be parallel to BC.

In triangleADE and triangle ABC.

DE ll BC

Angle ADE =Angle ABC...(corresponding angles.)

Angle AED =Angle ACB...(corresponding angles.)

By AA test of similarity both triangles are similar.

But,AD=1/2 × AB...(D is the midpoint)

DE=1/2 BC...(c.s.s.t.)

=1/2×6

=3cm.

Answer 2

Answer:

Step-by-step explanation: