Question

Triangle L, M, NLMN is formed by connecting the midpoints of the side of triangle I, J, KIJK. The lengths of the sides of triangle L, M, NLMN are shown. What is the length of start overline, I, J, end overline
IJ
? Figures not necessarily drawn to scale.
I
J
K
L
M
N
2
2
2

IJ = what

Answer 1

4

Reason: In triangle IJK, L and M are midpoints of JK and KI, so LM is the segment joining midpoints and equals half the length of the third side IJ. Since LM = 2, IJ = 2·2 = 4.