CBSE Class 10 Maths (Standard) 2016 · Paper 30/1/1 · Question 13

In Fig. 6, $ABC$ is a triangle coordinates of whose vertex $A$ are $(0,-1)$. $D$ and $E$ respectively are the mid-points of the sides $AB$ and $AC$ and their coordinates are $(1,0)$ and $(0,1)$ respectively. If $F$ is the mid-point of $BC$, find the areas of $△ABC$ and $△DEF$.