Point
* Tiny dot; location; has no space
Line
A collection of points that are side by side, going on forever
Plane
A set of points that align as a flat surface
Line segment
*-------* Part of a line with 2 end points
Ray
*----> A part of a line that includes one end point
Perpendicular lines
+ Two lines that intersect at right angles.
Parallel lines
= Two lines on the same plane that never intersect
What is the distance between two lines on a line?
The length of the shortest path between them
Angle
< The two rays with the same endpoint. Common endpoint is the vertex; the two rays are the sides of the angle
Circle
O The set of all points in a plane at a common distance, radius, from the center point
What is the distance around a circular arc (or arc length)?
A fraction of the circumference of the circle
Bisect
To cut into two pieces of equal size
Equilateral triangle
Δ A triangle with three equal sides
* Tiny dot; location; has no space
Point
A collection of points that are side by side, going on forever
Line
A set of points that align as a flat surface
Plane
*-------* Part of a line with 2 end points
Line segment
*----> A part of a line that includes one end point
Ray
+ Two lines that intersect at right angles.
Perpendicular lines
= Two lines on the same plane that never intersect
Parallel lines
The length of the shortest path between them
What is the distance between two lines on a line?
< The two rays with the same endpoint. Common endpoint is the vertex; the two rays are the sides of the angle
Angle
O The set of all points in a plane at a common distance, radius, from the center point
Circle
A fraction of the circumference of the circle
What is the distance around a circular arc (or arc length)?
To cut into two pieces of equal size
Bisect
Δ A triangle with three equal sides
Equilateral triangle