2.
A line that bisects another line segment at a right angle, through the intersection point.
3.
A line that divides a given angle into two angles of equal measures.
4.
A line segment joining a vertex to the midpoint of the opposite side, bisecting that side.
5.
A line segment drawn from a vertex of a shape perpendicular to the opposite side ("height" of a shape)
6.
The point where all three perpendicular bisectors of a triangle meet.
7.
The point where all three angle bisectors of a triangle meet.
8.
The point where all 3 medians of a triangle meet.
9.
The point where all 3 altitudes of a triangle meet.
10.
Lines that intersect each other at exactly one point
11.
When a point is the same distance away from two or more other points.
12.
A point where three or more lines or rays intersect with each other.
13.
Two figures that have the same shape but different sizes.
15.
The ratio between corresponding sides of two similar figures are equal.
