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double block algebra
NGC DB algebra voc review
Question | Answer |
---|---|
Two numbers with something in common: can be compared and written as a fraction | ratio |
to enlarge or shrink something | dilation |
to make a shape or object larger or smaller by multiplying it by a number | scale factor |
a shape or object that has the same proportions, but may be a different size | similar figure |
a five sided, two-dimensional figure | pentagon |
a four sided, two-dimensional figure with four right angles | rectangle |
to create a new shape by reflecting an image across a line: a mirror image | reflection |
to move a shape a certain amount on a coordinate plane | translation |
(x,y)----(x+4,y-3) | translation |
(x,y) ----(3x,3y) | dilation |
(x,y) ----(x,-y) | reflection over the x axis |
(x,y) ---(-x,y) | reflection over the y axis |
figures with the same size and shape. | congruent |
a relationship between two ratios with the a constant rate or ratio. | proportion |
formula for scale factor | new/old |
horizontal axis | x axis |
vertical axis | y axis |