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8th grade math > Unit 1 > Flashcards

Unit 1 Flashcards

1
Q

a point where two or more edges meet

A

vertex

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2
Q

a two-dimensional surface that extends indefinitely

A

plane

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3
Q

to estimate or assess the extent or value of something

A

measure

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4
Q

the position towards which something moves or faces

A

direction

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5
Q

movement along a straight line without turning or changing the size or shape

A

slide

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6
Q

circular movement around a given point

A

turn

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7
Q

turn rightward from the 9 position across the top to the 3 position

A

clockwise

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8
Q

turn leftward from the 3 position across the top to the 9 position

A

counterclockwise

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9
Q

movement in which every point on a figure is mirrored across a line or plane; a type of transformation

A

reflection

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10
Q

movement of every point on a figure around a given point by a given angle in a specific direction; a type of transformation

A

rotation

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11
Q

movement of every point on a figure along a straight line for a given distance in a given direction without turning or changing the size or shape; a type of transformation

A

translation

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12
Q
A

opposite

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13
Q

the resulting figure when an original figure is moved by translation, rotation, and/or reflection

A

image

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14
Q
A

angle of rotation

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15
Q
A

center of rotation

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16
Q
A

line of reflection

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17
Q

a set of translations, rotations, reflections, and/or dilations performed on a figure in a given order

A

sequence of transformations

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18
Q
A

distance

19
Q

a two-dimensional surface formed by two number lines intersecting at right angles on the zero point of each line

A

coordinate plane

20
Q
A

point

21
Q
A

segment

22
Q

a pair of number used to determine the location of a point in a plane

A

coordinates

23
Q

horizontal number line in a coordinate plane

A

x-axis

24
Q

vertical number line in a coordinate plane

A

y-axis

25
Q

a plane figure with at least three straight sides and three angles

A

polygon

26
Q

any movement of a figure that does not change an measurements of it

A

rigid transformation

27
Q
A

corresponding

28
Q
A

measurement

29
Q
A

preserve

30
Q
A

midpoint

31
Q
A

vertical angles

32
Q

lines that never intersect

A

parallel

33
Q
A

intersect

34
Q

one figure can be moved with translations, rotations, and/or reflections to fit exactly over another figure

A

congruent

35
Q
A

perimeter

36
Q
A

area

37
Q

measures 90 degrees; formed by perpendicular lines

A

right angle

38
Q

inside parallel lines and on opposite sides of the transversal

A

alternate interior angles

39
Q

a line that intersects parallel lines

A

transversal

40
Q
A

supplementary angles

41
Q

measures 180 degrees

A

straight angle

42
Q

a repeating pattern of one or more shapes which fit together perfectly and do not overlap

A

tessellation

43
Q
A

symmetry

44
Q

a translation, rotation, reflection, or dilation; or any combination of these

A

transformation

8th grade math (2 decks)

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