The two-column proof that proves
this is that the angle opposite the longer side (LK) is larger than the angle opposite the shorter side (MN).
Given that
, we need to prove that
.
Here is the two-column proof:
Statement 1:
(Given) Reason: Given
Statement 2:
(Given) Reason: Given
Statement 3:
Reason: In a triangle, if one side is longer than another, the angle opposite the longer side is larger. This is a property of triangles.
This completes the proof. The angle opposite the longer side (LK) is larger than the angle opposite the shorter side (MN).
Thus, from the two-column proof, we can conclude that
.