Geometry Unit 1 Illustrative Mathematics
Vocabulary
E Segment
A part of a line between two endpoints.
Circle
The set of all points that are the same distance (radius) from a given point (center)
Parallel Lines
lines in the same plane that do not intersect
Perpendicular Bisector
A line that is perpendicular to a segment at its midpoint.
Regular Polygon
A polygon with equal angles and equal sides.
Inscribed Polygon
A polygon whose vertices all lie on a circle.
, Bisect
to divide into two equal parts
Perpendicular Line
Lines that intersect to form right angles
Congruent
Having the same measure
Rigid Transformation
A transformation that does not change the size or shape of a figure.
Image
the new figure formed by a transformation, denoted by primes A'B'C'
Rotate
to turn around a central point a direction and an angle
Vocabulary
E Segment
A part of a line between two endpoints.
Circle
The set of all points that are the same distance (radius) from a given point (center)
Parallel Lines
lines in the same plane that do not intersect
Perpendicular Bisector
A line that is perpendicular to a segment at its midpoint.
Regular Polygon
A polygon with equal angles and equal sides.
Inscribed Polygon
A polygon whose vertices all lie on a circle.
, Bisect
to divide into two equal parts
Perpendicular Line
Lines that intersect to form right angles
Congruent
Having the same measure
Rigid Transformation
A transformation that does not change the size or shape of a figure.
Image
the new figure formed by a transformation, denoted by primes A'B'C'
Rotate
to turn around a central point a direction and an angle
