In the given figure, E is the midpoint of side AC and D is the midpoint of side AB, then
S1: DE = 12BC and DE || BC
S2: Midpoint Theorem: A line segment joining midpoints of 2 sides of a triangle is parallel to the third side and is half of it.
S1 and S2 are both true
The mid point theorem states that a line segment joining mid points of two sides of a triangle is parallel to the third side and is half of it.
In other words, in △ABC,
DE = 12BC and DE || BC