Geometry Glossary - M

Major Arc:

an arc whose measure is more than 180°

Median of a triangle:

a segment joining a vertex and the midpoint of the side opposite that vertex

Midpoint:

a point that divides a line segment into two parts of equal measure

Midpoint formula:

the coordinates of the midpoint of the segment whose endpoints are (x₁,y₁) and (x₂,y₂) are (, )

Midpoint of a segment:

on a segment, the point which is equidistant from each endpoint

Minor arc:

an arc whose measure is less than 180°