Question

In the adjoining figure, D, E, F are the midpoints of the sides AB, BC and CA [3]
respectively.
(i) If AC = 7.4 cm, find DE.
(ii) If DF = 4.1 cm, find BC.
(iii) If perimeter of ABC = 21.4 cm, find EF.

Answer 1

Answer:

DE=3.9 cm

BC=8.2 cm

EF = 2.9 cm

Step-by-step explanation:

DE=AC/2

BC=2*DF

EF=(21.4 - (AC+BC))/2