You will be able to define point, line, plane, collinear, non-collinear, coplanar, and noncoplanar.
You will be able to describe points, lines, and planes using mathematical terms.
You will be able to define line segment, endpoint, and congruent.
Standards Addressed:
G-CO.A.1: Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.
point: You can think of a point as a location. A point has no size.
space: the set of all points
line: You can think of a line as a series of points that extend in two directions without end.
collinear points: points that lie on the same line
plane: You can think of a plane as a flat surface that has no thickness. A plan contains many lines and extends without end in the directions of its lines.
coplanar: coplanar figures are figures in the same plane
postulate: or axiom is an accepted statement of fact
axiom: another word for a postulate
Many constellations are named for animals and mythological figures. It takes some imagination to join the points representing the stars to get a recognizable figures such as Leo the Lion.
Make a table and look for a pattern for the following activity.
Mark three points on a circle. Now connect the three points with as many straight lines as possible. How many lines can you draw?
Mark four points on another circle. How many lines can you draw to connect the four points?
Repeat this procedure for five points on a circle and then for six points. How many lines can you draw to connect the points?
With a partner, decide on someone to sketch and someone to describe. You will be trying to describe a figure made from points, lines, and planes to your partner, who will draw the figure.
Link to game directions.
A solid chunk of cheese is to be cut into 4 pieces. What is the least number of slices needed?