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| Define: Line | Linnes extend indefinitely and have no thickness they are an basic undefined term in Geometry |
| What is the geometric symbole for a "Line"? | <--> |
| Define: Space | Space is a boundless, three-dementional set of all points |
| Define: Point | Points have no size and are represented by a "dot" - they are an basic undefined term in Geometry. |
| Define: Plane | Planes can be thought of as flat surfaces that extend indefinitely in all directions and have no thickness they are an basic undefined term in Geometry |
| Define: Collinear | Collinear refers to points that lie on the same line. |
| Define: Coplanar | Coplanar are all poins and lines that share the same plane. |
| True or False: All the points in a coordinated plane (points on a graph) are coplanar. | True |
| Define: Intersecting Lines | Intersecting Lines are lines that cross or touch each other at one point |
| Define: Parallel Lines | Parallel Lines are lines in the same plane that do not intersect. |
| Define: Perpendicular Lines | Perpendicular Lines are two lines that intersect to form tight angles. |
| What letter is used to represent a "point"? | Points are named by "Capital Printed Lettersx -." |
| What is used to represent a "plane"? | Planes are named by "Capital Script Letters." |
| Define: Skew Lines | Skew Lines are lines that DO NOT intersect and are not on the same plane. |
| Define: Rays | Rays is a line that on one side has an end point and on the opposite side goes on indefinately. |
| What symbol is used to represent a "Ray"? | ---> |
| Define: Line Segments | Line segment are lines that have an end point and each end. |
| What symbol is used to represent a "Line Segment"? | .__________. |
| What is it called where Planes intersect? | Where Planes intersect is called Planes intersect at the "Line of Intersection." |
| True or False: Planes have "thickness" | False |
| Define: Coordinates | Coordinates make up a point on a line or graph |
| What is a "Coordinated Plane"? | A "Coordinated Plane" is a graph. |
| Define: Congruent Segments | Congruent Segments are "segments that are equal". |
| Define: Midpoint | The midpoint is a point on a line, ray, or other segment that divides it into "two equal parts." - bisects it |
| Define: Bisect | To divide something into "two equal parts." |
| Define: Angle | An angle is formed by two rays with the same midpooint |
| What is the symbol for an "angle"? | "<" example: |
| What is a "Protractro"? | A Protractor is used to measure angles |
| Define: Acute angle | An acute angles is an angle that measures less that 90 degrees. An acute angle w one that |
| Define: Right angle | A "right angles" messsures exactly 90 degrees |
| DEfine: Obtuse angle | An obtuse angle measures in excess of 90 degrees |
| Define: Straight angle | A straight angle measres extactly 180 degrees |
| Define: Congruent angles | Congruent angles are angles that "are equal." |
| Define: Construction | Construction is th use of a straightedge and a compas to draw a geometric figure |
| Define: Straightedge | A straightedge is a ruler with no markings |
| Define: Compass | A compass is a geometric tool used to draw circles and and parts of circles called arcs |
| Define: Perpendicular Lines | Perpendicular Lines are two(2) line that intersect to form "two(2) right angles." |
| Define: Perpendicular Bisector | A perpendicular bisector iof a segment is a line, segment, or ray that is perpendicular to the segment at its "midpont", thereby "bisecting (divding into two(2) equal parts) the segment into two(2) "concruent (equal)" segments |
| Define: Angle Bisector | An angle bisector is a ray that divides an angle into two(2) congruent (equal) coplanar angles. |
| What is the endpoint of an "angle bisector" called? | The end point of an "angle bisector" is called its "vertx". |
