Mod 3 Vocab--8th Grade

Mod 3 Vocab--8th Grade

Please write down words and definition

​Vocab Quiz Monday 9/20

​All definitions from https://www.mathsisfun.com/

​Dilation

​To resize something.

​Scale Drawing

​A drawing that shows a real object with accurate sizes reduced or enlarged by a certain amount (called the scale).

​Similiar

​When one shape can become another after a resize, flip, slide or turn.

​Similar Triangle- (please draw image as well)

​Two triangles are Similar if the only difference is size (and possibly the need to turn or flip one around).

These triangles are all similar:

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​

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(Equal angles have been marked with the same number of arcs)

Some of them have different sizes and some of them have been turned or flipped.

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​Transformation

​Changing a shape using

• Turn

• Flip

• Slide, or

• Resize

​Pythagorean Theorem

​In a right angled triangle the square of the long side is equal to the sum of the squares of the other two sides. It is stated in this formula:

a² + b² = c²

​

The long side is called the hypotenuse.

​Legs

​Two smaller sides of a right triangle. Called a and b

​Hypotenuse

​Longest side of a right triangle; c

​Scale Factor

​The ratio of any two corresponding lengths in two similar geometric figures is called as Scale Factor.

​Translation

​Moving without rotating, resizing or anything else, just moving.