Lesson 91 Warm Up Pg. 474.

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Presentation transcript:

Lesson 91 Warm Up Pg. 474

Course 1 Lesson 91 Geometric Formulas

Formulas Figure Perimeter Area Square Rectangle Parallelogram Triangle P = 4s P = 2l + 2w P = 2b + 2s P = s1 + s2 + s3 A = s2 A = lw A = bh A = ½bh Square Parallelogram Rectangle Height (h) Width (w) Side (s) Side (s) Length (l) Base (b)

Example Write the formula for the perimeter of a rectangle. Then substitute 8 cm for the length and 5 cm for the width. Solve the equation to find P.

Lesson 91 Homework Pg. 476 Practice, #1-10, WS #91