|
how to have success in class MANNING MATH HELP home Welcome letter Math 1 Math 1 adv Math 2 adv Algebra 1 Hon Algebra 2 Hon math links on the web geometry topics algebra topics mixed topics |
|
+ ÷ ∞ × π = ≤ ! * |
|
|
|
|
Geometry is "earth measure." Please note that this is a discussion of classical ideas in geometry. It has its formal roots back with Euclid of Greece. There are many more modern discussions that are mathematically useful and advanced students will have chances to see them later. |
|
 vocabularypoint: a location (no thickness nor any other measure of size) space: the set of all points plane: a flat slice of space, "2-D" line: a straight path of points extending endlessly in two (opposite) directions segment: a part of a line, with two endpoints that limit its length ray: a straight path of points extending endlessly in one direction angle: formed by the intersection of two rays, that point is called the vertex vertex: the point of intersection where an angle is formed polygon: a closed planar figure with segments for sides |
Polygons A polygon is a closed geometric figure with segments for sides. That means that there is no unconnected opening and that all sections are straight edges. A convex polygon is one that does not "cave in." You can connect any two points with a segment without going outside of the polygon. A concave polygon is one that does have a place where you can't connect two interior points with a segment without going outside the polygon. Most of our discussion will be about convex polygons.
|
