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Math Vocabulary > Geometry All Vocab > Flashcards

Geometry All Vocab Flashcards

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1
Q

3 Undefined Terms

A

Line, Point, and Plane

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2
Q

Point

A

A location. Named with a capital letter

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3
Q

Line

A

A straight path of points that is indefinitely long. Named with any 2 points on the line

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4
Q

Plane

A

A flat surface of points that is indefinitely long. Named with any non-collinear points on the plane

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5
Q

Collinear Points

A

3 or more points on the same line

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6
Q

Non-Collinear Points

A

3 or more points not connected on the same line(cannot be connected by one line)

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7
Q

Ray

A

Part of a line with an end point. Name with endpoint and one “direction point”

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8
Q

Endpoint

A

Point on the end of a segment or ray

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9
Q

Segment

A

Part of a line with 2 end points

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10
Q

Parallel Lines

A

Lines on the same plane that don’t intersect

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11
Q

Skew Lines

A

Lines that aren’t in the same plane that don’t intersect

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12
Q

Parallel Planes

A

Planes that don’t intersect

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13
Q

Congruent Segments

A

Line segments that have the same length

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14
Q

Midpoint

A

A point that divides a segment into 2 congruent segments

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15
Q

Angle

A

A figure formed from to rays that shares the same endpoint

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16
Q

Vertex

A

Common endpoint shared by 2 rays of an angle

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17
Q

Acute Angle

A

An angle with a measure less than 90 degrees

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18
Q

Right Angle

A

An angle with a measure of 90 degrees

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19
Q

Obtuse Angle

A

An angle with a measurement between 90 and 180 degrees

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20
Q

Straight Angle

A

An angle with a measure of 180 degrees

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21
Q

Perpendicular Lines

A

Lines that intersect to form right angles

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22
Q

Complimentary Angles

A

2 angles with measures that add up to 90 degrees

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23
Q

Supplementary Angles

A

2 angles with measures that add up to 180 degrees

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24
Q

Linear Pairs

A

Adjacent Supplementary Angles

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25
Q

Angle Bisector

A

A ray that divides an angle into two congruent angles

26
Q

Adjacent Angles

A

Angles that have a common vertex and side, but they don’t overlap

27
Q

Vertical Angles

A

The non-adjacent angles formed b two intersecting lines

28
Q

Transversal

A

A line that intersects 2 or more other lines

29
Q

Interior Angles

A

Angles that are inside the parallel lines when there is a transversal line

30
Q

Exterior Angles

A

Angles that are outside the parallel lines when there is a transversal line

31
Q

Triangle

A

A three sided polygon. Name using 3 verticies

32
Q

Acute Triangle

A

Triangles w all angles less than 90 degrees

33
Q

Right Triangle

A

A triangle with one right angle

34
Q

Obtuse Angle

A

A triangle with one obtuse angle

35
Q

Isosceles Triangle

A

A triangle with at least 2 congruent sides

36
Q

Scalene Triangle

A

A triangle with no congruent sides

37
Q

Equilateral Triangle

A

A triangle with all sides congruent(all measures of angles 60)

38
Q

No sides congruent…

A

No angles congruent

39
Q

Two sides congruent…

A

Two angles congruent

40
Q

All/3 sides congruent…

A

All/3 angles congruent

41
Q

Polygon

A

A closed figure with 3 or more sides formed by conjoining segments

42
Q

Regular Polygon

A

A polygon with all sides congruent and all angles congruent

43
Q

Irregular Polygon

A

A polygon without all angles and/or sides congruent

44
Q

Diagonal

A

A segment connecting two non-consecutive vertices in a polygon

45
Q

Circle

A

All the points in a plane a given distance from a given point

46
Q

Center of a circle

A

The given point in a plane

47
Q

Radius

A

A segment with one endpoint at the center of a circle and one endpoint on the circle

48
Q

Chord

A

A segment with both endpoints on the circle

49
Q

Diameter

A

A chord that goes through the center of a circle

50
Q

Arc

A

Part of a circle

51
Q

Semicircle

A

Half the circle the ends of the diameter divide the circles into semicircles

52
Q

Circumference

A

The distance around a circle

53
Q

Quadrilateral

A

A polygon with 4 sides

54
Q

Trapezoid

A

Quadrilateral with exactly one pair of sides parallel

55
Q

Coplanar Points

A

3 or more points on the same plane

56
Q

Isosceles Trapezoid

A

A quadrilateral exactly one pair of parallel sides the other non-parallel sides congruent

57
Q

Parallelogram

A

A polygon with both pairs of opposite sides parallel and congruent

58
Q

Rectangle

A

A parallelogram with 4 right angles

59
Q

Rhombus

A

Parallelogram with all sides congruent

60
Q

Square

A

Quadrilateral with all sides and all angles congruent

Math Vocabulary (1 decks)

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