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- 1. INNOVATIVE LESSON PLAN RENJINI K.R B.Ed MATHEMATICS REG NO: 13304009
- 2. Area of Parallelograms Standard 8
- 3. Goal Find the area of parallelograms.
- 4. Key Vocabulary Base of a parallelogram Height of a parallelogram Parallelogram Rhombus
- 5. Parallelogram A parallelogram is a quadrilateral where the opposite sides are congruent and parallel. A rectangle is a type of parallelogram, but we often see parallelograms that are not rectangles (parallelograms without right angles).
- 6. The Base of a Parallelogram Either pair of parallel sides of a parallelogram are called the bases of the parallelogram. base base
- 7. The Height of a Parallelogram The shortest distance (perpendicular distance) between the bases of a parallelogram is called the height of the parallelogram. The height of the parallelogram is always perpendicular to the bases.
- 8. Area of Parallelogram What is the area of this parallelogram? b=base h=height
- 9. Area of Parallelogram What is the area of this parallelogram? b=base CUT HERE! h=height
- 10. Area of Parallelogram What is the area of this parallelogram? MOVE TO HERE! b=base h=height
- 11. Area of Parallelogram It’s the same as the area of this rectangle h=height b=base
- 12. Area of Parallelogram Arearectangle= base x height (perpendicular height h) h=height b=base
- 13. Area of Parallelogram Areaparallelogram = base x height (perpendicular height h) b=base h=height
- 14. Area of Parallelogram b h Words: Area =(base)(height) Symbols: A = bh Very Important: The height must be perpendicular to the base.
- 15. Example 1 Find the Area of a Parallelogram Find the area of the parallelogram. SOLUTION Use the formula for the area of a parallelogram. Substitute 9 for b and 6 for h. A = bh Formula for the area of a parallelogram = (9)(6) Substitute 9 for b and 6 for h. = 54 Multiply. The parallelogram has an area of 54 square meters. ANSWER

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