Parallel & Perpendicular Slope
Symmetry
Rigid Transformations
Vocabulary
100
Parallel lines have _____ slope.
equal
100
Which shapes have only 180° rotational symmetry?
yellow, blue
100
Name the 3 types of rigid transformations
Translation, rotation, reflection
100
What is the name of a 5 sided shape?
pentagon
200
Perpendicular lines have ___ ____ slopes.
opposite reciprocal
200
Describe the rotational symmetry of a square.
90o
200
Describe the following transformation:
translate left 6, up 2
200
Define decagon
10-sided shape
300
Are the following lines parallel, perpendicular, or neither?
y = 4x - 3
y = -4 +7
neither
300
Describe the regular hexagon's rotational symmetry:
60o rotation symmetry
300
describe how shape a transforms to b:
reflect over x axis
300
When you apply rigid transformations, the preimage will be ______________ to the image.
Congruent
400
Identify the slope of the given line and find the slope of a line that is perpendicular to it.
y=7x+3
m=7
m=-frac{1}{7}
400
A regular polygon has 120o rotational symmetry. How many sides does this shape have? What is the most specific name for this shape?
3 sides - Equilateral triangle.
400
Rigid transformations preserve ____ and ____.
Size, shape.
400
A regular polygon has rotational symmetry of 60o
what is the name of this shape?
hexagon
500
Give me one line that is parallel to the given line (not the same line), and one that is perpendicular.
y=frac{1}{4}x+3
Parallel:
y=frac{1}{4}x+k
Perpendicular:
y=-4x+k
500
A figure rotates 9 times and lands on itself each time. How many degrees is it rotating each time? What is the name of the figure?
40° Nonagon
500
Give 2 different ways to describe the following transformation.
90° counterclockwise OR 270° clockwise. Could also say double reflection if clear about lines of reflection.
500
What is the other word for rigid motions?
Isometries