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MATH VOCAB > MATH VOCAB STUDY > Flashcards

MATH VOCAB STUDY Flashcards

1
Q

Undefined Terms

A

Words that do not have formal definitions, but there is an agreement about what they mean.

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2
Q

Line

A

A line has one dimension. It is represented by a line with two arrowheads, but it extends without end.

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3
Q

Point

A

A location in space that is represented by a dot and has no dimension.

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4
Q

Plane

A

A flat surface made up of points that has two dimensions and extends without end, and is represented by a shape that looks like a floor or a wall.

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5
Q

Collinear Points

A

Points that lie on the same line.

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6
Q

Coplanar Points

A

Points that lie in the same plane.

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7
Q

Defined Terms

A

Terms that can be described using known words such as point or line.

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8
Q

Line Segment

A

Consists of two endpoints and all the points between them.

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9
Q

Endpoints

A

Points that represent the ends of a line segment or ray.

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10
Q

Ray

A

Ray AB is a ray if it consists of the endpoint A and all the points on Line AB that lie on the same side of A as B.

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11
Q

Opposite Rays

A

If point C lies on Line AB between A and B, then Ray CA and Ray CB are opposite rays.

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12
Q

Intersection

A

The set of points two or more geometric figures have in common.

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13
Q

Postulate

A

A rule that is accepted without proof.

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14
Q

Axiom

A

A rule that is accepted without proof.

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15
Q

Coordinate

A

A real number that corresponds to a point on a line.

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16
Q

Distance

A

The absolute value of the difference of two coordinates on a line.

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17
Q

Construction

A

A geometric drawing that uses a limited set of tools, usually a compass and a straightedge.

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18
Q

Congruent Segments

A

Line segments that have the same length.

19
Q

Between

A

When three points are collinear, one points Is between the other two.

20
Q

Midpoint

A

The point that divides a segment into two congruent segments.

21
Q

Segment Bisector

A

A point, ray, line, line segment, or plane that intersects the segment at its midpoint.

22
Q

Inscribed Polygon

A

A polygon in which all of the vertices lie on a circle.

23
Q

Circumscribed Circle

A

A circle that contains all the vertices of an inscribed polygon.

24
Q

Angle

A

A set of points consisting of two different rays that have the same endpoint.

25
Q

Vertex

A

The point where a graph changes direction.

26
Q

Sides of an angle

A

The rays of an angle.

27
Q

Interior of an angle

A

The region that contains all the points between the sides of an angle.

28
Q

Exterior of an angle

A

The region that contains all the points outside of an angle.

29
Q

Measure of an angle

A

The absolute value of the difference between the real numbers matched with the two rays that form the angle on a protractor.

30
Q

Acute Angle

A

An angle that has a measure greater than 0 degrees and less than 90 degrees.

31
Q

Right Angle

A

An angle that has a measure of 90 degrees.

32
Q

Obtuse Angle

A

An angle that has a measure greater than 90 degrees and less than 180 degrees.

33
Q

Straight Angle

A

An angle that has a measure of 180 degrees.

34
Q

Congruent Angles

A

Two angles that have the same measure.

35
Q

Angle Bisector

A

A ray the divides an angle into two angles that are congruent.

36
Q

Complementary Angles

A

Two angles whose measures have a sum of 90 degrees.

37
Q

Supplementary Angles

A

Two angles whose measures have a sum of 180 degrees.

38
Q

Adjacent Angles

A

Two angles that share a common vertex and side, but have no common interior points.

39
Q

Linear Pair

A

Two adjacent angles whose noncommon sides are opposite rays.

40
Q

Vertical Angles

A

Two angles whose sides form two pairs of opposite rays.

41
Q

Reflex Angle

A

An angle that has a measure greater than 180 degrees but less than 360 degrees.

42
Q

Compass

A

A tool used to inscribe shapes and angles.

43
Q

Protractor

A

A tool used for measuring angles.

MATH VOCAB (1 decks)

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