Unit 2 voc.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| `Three undefined terms in geometry | points, lines, and planes
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| point | has no length, width, or thickness, but has a position.
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| space | is the boundless 3-dimensional set of all points.
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| line | has length, but no width or thickness. it extends without end in two directions.
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| collinear points | points that lie on the same line are collinear points.
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| plane | is a flat surface that has no thickness. it extends without end in all directions.
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| coplanar | points and lines in the same plane
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| intersecting lines | lines shaes a point
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| intersecting planes | share an indefinite number of points who two planes intersect, the intersection is a line
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| postulate | a statement accepted to be true without proof
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| postulate 1-1 | through any two points there is exactly one line
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| postulate 1-2 | if two lines intersect then they intersect in exactly one point.
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| postulate 1-3 | if two planes then they intersect in axactly one line.
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| postulate 1-4 | through any three noncollinear points there are exactly one plne.
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| line segment | is a portion or a line between two points, called endpoints
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| ray | is a part of a line that consists of an initial point and all points on the line that lie on the side of the initial point.
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| opposite rays | start at the same point and go in opposite directions.
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| parallel lines | are coplanar lines that do not intersect
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| skew lines | are noncoplanar lines. therefore, they are ot parallel and not intersect.
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| perpendicular lines | lines intersect to form right angles.
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| parallel planes | are planes that do not intersect
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| Ruler Postulate | the distance betwwen any two points on a number line is a absolute value of the difference of the corresponding numbers.
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| congruent segments | twos egments with the same length.
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| midpoint of a segment | a pont that divides a segment into two congruent segments. it bisects the segment.i
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| bisector of a segment | any line, ray or other segment through a midpoint.
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| angle | two arys that are connected at their endpoints
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| protractor | device used to measure angles
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| acute angle | less than 90%
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| obtuse angle | greater than 90%
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| right angle | exactly 90%
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| congruent angles | with the same measures
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| angle bisector | ray that divides an angle into 2 congruent(=)angle
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| inductive reasoning | is a type reasoning that reaches conclusions based on a pattern of specific eaxamples or past events
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| counterexample | is an example that proves a conjectures is false.
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| conjecture | a conclusion reaches by using inductive reasoning.
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To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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