Unit one vocabulary terms and concepts
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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| Equidistant | Equally distant
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| The shape formed when finding all points that are 2 cm from a point | Circle
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| Location in space that is infinitely small. | Point
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| A point has this many dimensions. | 0
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| A straight, infinitely thin, infinitely long geometrical object. | Line
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| A line has this many dimensions. | 1
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| A flat surface that is infinitely large and infinitely thin. | Plane
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| A plane has this many dimensions | 2
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| When a line can be drawn that includes all of the points, then the points are said to be this. | Collinear
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| When a plane can be drawn that includes all of the points, then the points are said to be this. | Coplanar
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| All collinear points are necessarily coplanar. True or False. | True
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| All coplanar points necessarily are collinear. True or False. | False.
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| Two planes always intersect at this. | A line
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| AB (with no line above it) denotes what? | The distance between A and B.
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| The distance formula is what? | ABSOLUTE VALUE of (coordinate 1 - coordinate 2)
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| In Ray AC (pretend there's a ray above the A and the C), which point is the endpoint? | A
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| Opposite rays must point 180 degrees from one another. True or False. | True
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| Could Ray ST and Ray TR be opposite rays? | No
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| This postulate says that you can always create a number by pairing two points to numbers and then using the distant between those two points to determine the location of other points? | Ruler Postulate
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| What postulate says AB + BC = AC | Segment Addition Postulate
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| Objects of the same shape and size are said to be this. | Congruent
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| Segments of the same length. | Congruent Segments
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| The point which divides a segment into two congruent segments. | Midpoint of a Segment
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| The line, segment, ray, or plane that intersects a segment at its midpoint. | Bisector of a Segment
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| Figure formed by two rays that share an endpoint. | Angle
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| The vertex in angle ABC | B
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| Angles less than 90 degrees | Acute
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| Angles that are 90 degrees | Right Angle
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| Angles between 90 and 180 degrees | Obtuse Angle
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| Angles that are 180 degrees | Straight Angle
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| If point B lies in the interior of angle AOC, then measure of angle AOB + measure of angle BOC = measure of angle AOC | Angle Addition Postulate
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| Angles that have equal measures | Congruent Angles
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| Two angles in a plane that share a vertex and a common side but no interior points (so they are next to each other) | Adjacent Angles
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| The ray that divides an angle into two congruent, adjacent angles | Bisector of an Angle
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| A bisector of an angle divides is a (WHAT?) that divides an angle into two (WHAT?) and (WHAT?) angles. | ray, congruent, adjacent
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| True or False? Alex Webb has one eyeball. | TRUE
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| True or False? Alex Webb has exactly one eyeball. | FALSE
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| A line contains at least (HOW MANY?) points. | 2
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| A plane contains at least (HOW MANY?) points. | 3
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| A space contains at least (HOW MANY?) points. | 4
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| Postulate 6: Through any two points there is exactly (HOW MANY?) line(s). | 1
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| Postulate 7: Through any three points there is (LESS THAN/EXACTLY/AT LEAST) one plane. | at least
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| Postulate 7: Through three collinear points there are (HOW MANY?) planes. | infinitely many
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| Postulate 7: Through three non-collinear points, there is (LESS THAN/EXACTLY/AT LEAST) one plane. | exactly
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| Postulate 7: You need this many points to define a plane | 3
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| Postulate 8: If two points are in a plane, then the line that contains them is (ALWAYS/SOMETIMES/NEVER) in that plane. | Always
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| Postulate 9: If two planes intersect, then their intersection is a (WHAT?) | Line
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| Theorem 1-1: If two lines intersect, then they intersect in exactly one (WHAT?) | point
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| Theorem 1-2: Through a line and a point not in the line, there is (HOW MANY?) plane(s). | exactly one
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| Theorem 1-3: If two lines intersect, then (HOW MANY?) plane(s) contain(s) the lines. | exactly one
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