length - distance from one end to the other (how long something is), breadth - the distance across from side to side (width), perimeter - distance around the outside of a shape, calculated by adding the length of all sides together, area - the size a surface takes up (measure in square units - L x W), perpendicular - two line meeting at a right angle, base - the bottom line of a shape, height - the measurement from top to bottom, formula - the mathematical way to work something out, parallel - lines the same distance apart, never touching, parallelogram - a quadrilateral (4 sided shape), a parallelogram has opposite sides that are parallel and of equal length,

Y9 - Block 3: Area & Perimeter definitions

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