In a triangle ABC, D is the midpoint of AB and E is the midpoint of AC. If BC = 11 cm, then DE = ___ cm.
5.5
22
5
6
In a triangle ABC, D is the midpoint of AB and E is a point on AC such that DE || BC. Then
In a triangle ABC, D is the midpoint of AB, E is the midpoint of AC and DE is parallel to BC, then DE : BC = ________.