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__The Very Begining of Learning Geometry__ Point: it has no dimensions Lines: it has one demension, straight, and will go on forever. It also measures length Planes: It has 2 demensions, mesures width and length. But it **must** have **a least** 3 points if it is a plane Colinear:One line that has or contains 2 points Coplanar:Plane that has or contains **at least** 3 points Segment: Line that has 2 endpoints, begins and ends at each point Endpoints: The 2 points that start and end a segment Ray:Part of a line but it has only one endpoint Angle: Has 2 rays that connect at a common or shared endpoint Vertex of the Angle: two rays can connect at a common endpoint Sides of an Angle: 2 rays that make up any angle Interior: Inside of an angle Exterior: Outside of an angle Intersect: Afirgue that has 1 or more points in common Intersection: Group or bunch of points that have things in common Postulates:Fundamental geometrical thoughts Notes: -The intersection of two lines is a point -The intersection of two planes is a line -Through any two points,there is exactly 1 line -Through any three noncollinear points, there is eactly one plane -If two points are in aplane, then the line containing them is in a plane

__The Very Truely Wonderful World of Measuring__

Number Line: line that has been set up to correspond or work with real numbers Coordinate of a point: real number on a number line Length of AB: Finding the measures of these two points, A and B, on a number line Length: The measure of any two points Segment Congruence postulate: Any two segments with the same length is consider to be congruent Segment Addition Postulate: the addition of 2 segments together

__(Shriek!!) Angles and their Measuring Ways__

Degree: The most common mesurements for a angle Measure of an angle: The vertex, is being place or set at the center or middle of a half of a circle between ) degrees and 180 degrees Angle Congruence Postulate: Any two angles that have the same angle measurement Complementry Angles: Any two angles that add up to equal 90 degrees Complement: The other angle that adds up with another angle to equal 90 degrees Supplementry angles: Any two angles that will add up to be 180 degrees Supplement: Two angles that add up or have the sums of 180 degrees Linear pair: Endpoint of a ray that will fall onto a line. This will form two angles that will add up to be 180 degrees Linear Pair Property: Two angles that will create or make a linear pair, then they are also a supplementry angle Right angle: Any angle that will measure to be 90 degrees Acute angle: Any angle that will measure to be less than 90 degrees Obtuse angle: Any angle that will measure to be more than 90 degrees

__The Very Cool Way of Paper Folding with Geometry__

Construction: anything made or created under rules and thought to mathamatically correct Perpendicular lines: Two lines that will intersect to form and create a right angle Parallel lines: Two coplaner lines that won't ever intersect, it also goes on forever. Conjecture: Statement that the person believes to be true. The person makes an "educated guess", based on observation. Segment bisector: A line in which divides a segment into two seperate congruent parts. Midpoint: