Pre-Algebra
Area is the space inside an object. You can find the area of a rectangle by drawing small rectangles inside the main rectangle, or by using the formula for area of rectangle: a = l·w.
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Basic Geometry
Angles
Triangles
Quadrilaterals
Perimeter
Area of a Square
Area of a Rectangle
Area of a Triangle
Pythagorean Theorem
Congruent Angles
Congruent Lines
Two Similar Triangles
Similar Triangles Within Each Other
Two Similar Quadrilaterals