L and M are the mid points of sides AB and AC of a triangle ABC, respectively, and BC = 18 cm. If LM || BC, then find the length of LM (in cm).
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 9.
Given that BC = 18 cm
The line segment joining the mid-points of 2 sides of a triangle is parallel to the third side and is half of it
Hence, LM = = 9
Hence, the length of LM is 9 cm.