1.
a line that bisects another line segment at a right angle, through the intersection point
2.
a ray, segment, or line that divides a given angle into two angles of equal measures
3.
A line segment from a triangle's vertex to the middle of its opposite side
4.
a line that passes through two very specific points on a triangle: a vertex, or corner of a triangle, and its opposite side at a right, or 90-degree, angle
5.
the point where all three perpendicular bisectors of a triangle meet
6.
a point where three angle bisectors from three vertices of the triangle meet
7.
the centre point of the object
8.
the point where all three altitudes of the triangle intersect
9.
two or more lines pass through a single point, in a plane and there congruent
10.
a point which is at the same or equal distance from two given points
11.
a point where three or more lines or rays intersect with each other
12.
two figures that have the same shape but different sizes
13.
the pair of matching sides that are placed at the same spot in two different shapes
14.
the ratio between corresponding sides of two similar figures are equal
