A fixed location in space.
A straight path that continues without end in both directions.
Part of a line between two endpoints.
Part of a line that has one endpoint and goes on without end in one direction.
Lines which cross each other, meeting at common point.
Intersecting lines that form right angles.
Lines in the same plane which do not intersect.
A flat surface that extends without end in all directions.
An angle measuring 90 degrees.
An angle measuring less than 90 degrees.
An angle of 180 degrees.
An angle measuring greater than 90 degrees but less than 180 degrees.
The endpoint at which two rays intersect.
An instrument that is used for constructing and measuring angles.
A triangle with tree sides of equal length.
A triangel with at least two sides of equal length.
A triangle having three unequal sides.
A triangle having one 90 degree angle.
A triangle having three acute angles.
A triangle having one angle greater than 90 degrees.
A closed plane figure formed by line segments.
Has sides that are equal in length and angles that are equal in size.
A polygon with four sides.
A solid figure having only flat surfaces called faces.
A closed plane figure with all points an equal distance from the center.
A tool used to draw a circle.
A line segment crossing the center of a circle and having both endpoints on the circle.
A line segment from the center to a point on the circle.
A line segment with both endpoints on the circle.
A line (or fold) that divides a figure into congruent halves.
No lines of symmetry exist.
It moves the figure in a straight line, changing its location, but not its position.
A move that turns the figure over on a line of symmetry.
It moves the figure around a fixed point.
Figures that have the same shape and size.
Figures that have the same shape but may not have the same size.