Rotations&Translations&Reflection
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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| What is a rotation? | A transformation around a point/center that moves the original point a certain point to create a rotated point.
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| What the rule for rotating a figure 90 degrees? | (x,y) --> (-y,x)
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| (x,y) --> (-x,-y) What degree did i rotate by? | 180 degrees
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| Whats another word for isometry? | Reflection
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| How do you reflect a figure across the x-axis? | (x,y) ----> (x,-y)
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| Whats the rule for reflection across the y=x ? | (x.y)---> (y,x)
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| What is a point? | Named a location and has no size.
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| How do you label a line? | lowercase cursive letter or two points on a line
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| What is a vertex? | Intersection of 2 or more lines, segments or rays.
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| How do you label a plane? | 3 points on the plane or capital cusive letter.
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| What is a segment? | A part of a line containing 2 points and all points inbetween.
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| How can you locate an endpoint? | Just look for a capital letter.
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| What is a ray? | Starts an an endpoint and extends forever in one direction
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| Whats the difference between a ray and an opposite ray? | A ray is one line that extends forever, while an opposite ray is two rays that have a common endpoint.
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| What does collinear mean? | Points that lie on the same line.
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| What does coplanar mean? | Points that lie on the same plane.
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| How do you reflect a shape across the y-axis? | (x,y) --> (-x,y)
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| How do you translate an image? | Along a vector.
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| Whats the rule for translating along a vector? | (x,y) ---> (x+a,y+b)
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| What is a line? | A straight path with no thickness and extends forever.
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| What is line symmetry? | When a figure can be reflected across a line so the images match up
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| What is line of symmetry? | Divides the figure into two congruent halves.
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| What is rotational symmetry? | If a figure can be rotated around a point by an angle betwwen zero and 360 degrees
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| What is plane symmetry? | A 3-D figure can be cut by a plane and will create two equal figures.
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| What is symmetry about an axis? | If a 3-D figure can be rotated around a line and the shape doesn't change.
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Created by:
SoccerSwagg
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