Area of a Parallelogram : Area of a Parallelogram By: Sanny N. Tendilla Parallelogram : 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). Study the figure : Study the figure Which sides have the same length?
Side AC has the same length as side BD.
Side AB has the same length as side CD. A B C D Slide 4: Area of a Parallelogram base height base Formula: A = b x h How do we find the area of a parallelogram? : How do we find the area of a parallelogram? Let's draw the figure in a graphing paper and cut. Put the cut part to the other side. What figure is now formed? How many square units are there in the rectangle? Parallelogram? A rectagle 15 sq units Area of a Parallelogram : Area of a Parallelogram Any side of a parallelogram can be considered a base. The height of a parallelogram is the perpendicular distance between opposite bases.
The area formula is A=bh A=b x h A=5m x 3m A=15m2 Slide 7: Area of a Parallelogram Height=8 cm Base=12 cm Formula: A = b x h Slide 8: A=12 cm x 8 cm Formula: A = b x h A= 96 cm² Area of a Parallelogram Base=12 cm Height=8 cm Slide 9: Find the area of the parallelogram Height = 6 in Base = 9 in Formula: A = b x h 9 in x 6 in A= 54 in² Answer Slide 10: How do we find the area of a parallelogram? Remember :
To find the area of a parallelogram, use the formula
A = b x h Slide 11: Complete the table. 5 m2 7 cm2 32.4 m2 23 mm2 75.6 yd2