Mathematics
D, E and F are respectively the mid-points of the sides BC, CA and AB of a ABC. If BC = 10 cm, CA = 12 cm and AB = 17 cm, then the perimeter of the DEF is :
13 cm
19.5 cm
39 cm
None of these
Related Questions
On the sides AB and AC of a △ABC, D and E are two points such that AD : AB = AE : AC = 1 : 2. If BC = 7 cm, then DE =
3.5 cm
7 cm
14 cm
15 cm
AD and BE are two medians of a ABC. F is a point on AC such that DF || BE. If AC = 12 cm, then FC =
6 cm
4 cm
3 cm
none of these
D, E and F are respectively the mid-points of the sides BC, CA and AB of a ABC. If BC = 12 cm, CA = 15 cm and AB = 18 cm, then the perimeter of the quadrilateral DEAF is :
45 cm
27 cm
30 cm
33 cm
In the adjoining figure, AD = BD and DE || BC. If AC = 6 cm and DE = 4 cm, then the length of BC is :
4 cm
5 cm
6 cm
8 cm
