What is the formula for finding the area of a rectangle/square?
A= lw
What is the formula for finding the area of a triangle?
A= 1/2bh or bh/2
What is the formula for finding the area of a parallelogram?
A = bh
What is the formula for finding the area of a trapezoid?
A= 1/2h(b1 + b2)
What shape has 4 sides and 4 right angle?
Rectangle
What is the area of a square with a side of 4 cm?
A = lw
A = 4(4)
A= 16 cm2
What is the area of a triangle with a base of 8 inches and a height of 10 inches?
A = 1/2bh
A = 1/2(8)(10)
A= 40 in2
What is the area of a parallelogram with a base of 3 meters and a height of 12 meters?
A = bh
A = (3)(12)
A= 36 m2
What is the area of the trapezoid?
A= 1/2h(b1 + b2)
A = 1/2(6)(15 + 7)
A = 1/2(6)(22)
A = 66 ft2
What shape 3 sides, 3 angles, and the angles always add up to 180°?
Triangle
What is the area of the rectangle?
A = lw
A = 22(9)
A= 176 cm2
What is the area of a triangle with a base of 1 cm and a height of 1 cm?
A = 1/2bh
A = 1/2(1)(1)
A= 0.5 cm2 or 1/2 cm2
What is the area of the parallelogram?
A = bh
A = (26)(18)
A= 468 in2
Find the area of a trapezoid.
A= 1/2h(b1 + b2)
A = 1/2(11)(18 + 14)
A = 1/2(11)(32)
A = 176 cm2
What shape has 4 sides, opposite sides are equal and parallel, opposite angles are equal.
Parallelogram
The area of a rectangle is 26 cm2. What is the length and width of each side?
13 cm and 2 cm
What is the base of a triangle with an area of 54 cm2 and a height of 9 cm?
12 cm
Find the area of a parallelogram.
A = bh
A = (14)(23)
A= 322 ft2
What is the area of a trapezoid?
A= 1/2h(b1 + b2)
A = 1/2(6)(12 + 9)
A = 1/2(6)(21)
A = 63 m2
What shape has 4 sides, exactly one pair of parallel sides called the bases. The other two sides are the legs.
Trapezoid
Find the area of the shaded part.

A = lw A = lw A = lw
A = 17(8) A = 5(4) A = 4(1.5)
A= 136 cm2 A = 20 cm2 A = 6 cm2
20 + 6 = 26 136 - 26 = 110
A= 110 cm2
Triangle PQR is a section of a ball field. Find the area.
A = 1/2bh
A = 1/2(26)(12)
A= 156 ft2
The area of parallelogram EFGH is 207 square inches. It's height is 9 inches. Find the base GH.
23 inches
What is the area of the trapezoid?
A= 1/2h(b1 + b2)
A = 1/2(39)(13 + 25)
A = 1/2(39)(38)
A = 741 ft2
What shape has opposite sides that are equal and parallel?
Rectangle