# Quadrilaterals and Triangles Part One: Rectangles, Squares.

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Quadrilaterals and Triangles Part One: Rectangles, Squares

Quadrilaterals RectanglesSquares 1. Draw It 2. Tell me about the sides (parallel, perpendicular, congruent) 3. Tell me about the angles (acute, obtuse, right)

Perimeter and area Perimeter: –Distance around a shape –Units are linear, such as inches or centimeters. Area: –Space in a shape –Units are square units, such as square inches or square centimeters.

Formulas for squares, rectangles, and parallelograms Formula for finding perimeter P = 2(base + height) Formula for finding area A = (b)(h)

Which are 4-sided polygons? Quadrilaterals Triangles Rectangles Pentagons Squares Rhombus Pyramid Hexagons Prism Kite Circles Trapezoid Cubes Octagon Parallelogram Cylinder

Part 2: Triangles How are they related to parallelograms?

Can you split these shapes in half by drawing a diagonal line?

How is a triangle different?

How do we find perimeter and area?

Formula Area of parallelograms, rhombus, rectangle, square = (base)(height) Area of triangles = (base)(height)

What if it is not a right triangle? Find the right ( ) Altitude.