Slide 2 These are parallelograms! Slide 3 Area of a
Parallelogram A parallelogram is a _______________ whose opposite
sides are _________. Area of a parallelogram = Since a rectangle is
a type of parallelogram, the area formula is exactly the same!!
Slide 4 Lets talk about height for a moment Slide 5 What is the
height of each parallelogram? 8 ft 5 ft 4 ft 12 in 2 in 9 in 13 cm
5 cm 4 cm Slide 6 Area of a parallelogram: 8 ft 5 ft 1.Which
measurements will we use? 2.Fill in the formula 3.Write your answer
and label your units. 4 ft 5 ft is not the height!! We wont use
this in our area calculation! Slide 7 Area of a parallelogram: 20
ft 12 ft 1.Which measurements will we use? 2.Fill in the formula
3.Write your answer and label your units. 8 ft Slide 8 Area of a
parallelogram: 5 in 7 in 1.Which measurements will we use? 2.Fill
in the formula 3.Write your answer and label your units. 6 in Slide
9 Calculate the area: 5 ft 8 ft 7 ft 2.5 in 1.5 in 5 in 6.5 cm
10.05 cm 3.4 cm Slide 10 A triangle can be thought of as half of a
parallelogram. Slide 11 Riddle me this What would be the formula
for the area of a triangle? We just calculated how to find the area
of a parallelogram. If a triangle is simply half of a
parallelogram, then Slide 12 If we have a parallelogram 3 ft 8 ft
What is the area of just this triangle? 4 ft Slide 13 AREA OF A
TRIANGLE WordsNumbersFormula Triangle: The area A of a triangle is
one- half the base length b times the height h. A = (8)(4) = 16
units 2 1212 Slide 14 Area of a triangle: 8 ft 5 ft 1.Which
measurements will we use? 2.Fill in the formula 3.Write your answer
and label your units. 4 ft Slide 15 Area of a triangle: 15 in 12 in
1.Which measurements will we use? 2.Fill in the formula 3.Write
your answer and label your units. 10 in Slide 16 Area of a
triangle: 14 cm 12 cm 6 cm 1.Which measurements will we use? 2.Fill
in the formula 3.Write your answer and label your units. 5 cm Slide
17 Area of a triangle: 14 ft 11 ft 6 ft 1.Which measurements will
we use? 2.Fill in the formula 3.Write your answer and label your
units. Slide 18 Calculate the area: 12 in 5 in 3 in 4.5 ft 4.2 ft
2.3 ft 8.7 cm 1.5 cm 7.2 cm 6.2 cm Slide 19 Keypoint! Slide 20 (2,
2), (4, 2), (0, 5) 6 = 9 units 2 A = bh 1212 Graph and find the
area of the figure with the given vertices. (4, 2) (0, 5) (2, 2) =
6 3 1212 Area of a triangle Substitute for b and h.
