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UNIT 9: GEOMETRY – 6 TH GRADE LESSON 2: AREA OF A PARALLELOGRAM.

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Presentation on theme: "UNIT 9: GEOMETRY – 6 TH GRADE LESSON 2: AREA OF A PARALLELOGRAM."— Presentation transcript:

1 UNIT 9: GEOMETRY – 6 TH GRADE LESSON 2: AREA OF A PARALLELOGRAM

2 CORNELL NOTES HEADER Topic: Geometry 6 th Grade (Unit 9 pg. 2) E. Q.: How can applying geometric formulas help solve real-world problems? Name: _____________________________ Date: _____________________________ Class: _____________________________ Chp. 10 Lesson 1 –Area of a Parallelogram

3 VOCABULARY parallelogram – A quadrilateral with two pairs of parallel sides.

4 AREA OF A PARALLELOGRAM Area of a Parallelogram: A = bh where b = base (length of any of its sides) h = height (the perpendicular distance between the side whose length is the base and the opposite side) Ex. Find the area of a parallelogram. 5 m 2 m A = bh = 5(2) = 10 m 2

5 FINDING AN UNKNOWN DIMENSION Ex. The area of a parallelogram is 45 cm 2 and the height is 9 cm. What is the base? A = bh(Write the formula for the area of a parallelogram.) 45 = b(9)(Substitute the known values into the equation.) 45 = b(9)(Divide both sides of the formula by 9 to solve for b.) 9 9 5 cm = b(The length of the base is 5 cm.)


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