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Learn to calculate areas and perimeters of geometric shapes, apply the Pythagorean theorem, and solve word problems with triangles. Enhance your vocabulary and grasp essential area formulas.
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Objectives • Calculate the area of given geometric figures. • Calculate the perimeter of given geometric figures. • Use the Pythagorean theorem to find the lengths of a side of a right triangle. • Solve word problems involving perimeter, area, and/or right triangles.
Vocabulary • polygon • perimeter • area • trapezoid • parallelogram • triangle • rectangle • circle • circumference • radius • diameter • legs (of a right triangle) • hypotenuse
Area Formulas Triangle Heron’s Formula for Area of Triangle Rectangle and Parallelogram Trapezoid
Circle Formulas Circumference (Perimeter) Area
Pythagorean Theorem For right triangles c b a
Walk 100 yards south, then 120 west and then 30 yards south. How far from the original starting point are you?