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5 Minute Check

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Find the area. Complete in your notebook. 1. 6in 9in

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5 Minute Check Find the area. Complete in your notebook. 1. 6in 9in 9 in 6in = 54 in

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5 Minute Check Find the area. Complete in your notebook. 2. 13.5ft 2.5ft

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5 Minute Check Find the area. Complete in your notebook. 2. 13.5ft 2.5ft 13.5 ft 2.5 ft = 33.75 ft

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5 Minute Check Find the area. Complete in your notebook. 3. 1.2cm 9.8cm

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5 Minute Check Find the area. Complete in your notebook. 1.2 cm 9.8 cm = 11.76 cm 3. 1.2cm 9.8cm

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5 Minute Check

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Friday, March 6 Chapter 6.9.1/6.9.2 Area of Parallelograms And Triangles

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Area of Parallelograms Objective: To find areas and missing dimensions of parallelograms and triangles.

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Area of Parallelograms A polygon is a closed figure formed by 3 or more straight lines.

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Area of Parallelograms A polygon is a closed figure formed by 3 or more straight lines. A quadrilateral is a polygon with 4 sides.

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Area of Parallelograms A polygon is a closed figure formed by 3 or more straight lines. A quadrilateral is a polygon with 4 sides. A triangle is a polygon with three sides.

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Area of Parallelograms A parallelogram is a quadrilateral with opposite sides parallel and equal in length.

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Area of Parallelograms A rhombus is a parallelogram with all equal sides.

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Area of Parallelograms The area A of a parallelogram is the length l multiplied by the height h. A = lh The length and height must be perpendicular to each other. Connected by a 90 angle. h l

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Area of Parallelograms A formula is an equation that shows a relationship among certain quantities. The formula to find the area of a parallelogram is A = lh

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Area of Parallelograms What is the area of the parallelogram?

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Area of Parallelograms What is the area of the parallelogram? A =lh l = ?

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Area of Parallelograms What is the area of the parallelogram? A =lh l = 6 h = ?

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Area of Parallelograms What is the area of the parallelogram? A =lh l = 6 h = 8 What is the area?

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Area of Parallelograms What is the area of the parallelogram? A =lh l = 6 h = 8 What is the area? A = 6 8 = 48 units or 48u

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Area of Parallelograms What is the area of the parallelogram? Do this on your own.

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Area of Parallelograms What is the area of the parallelogram? l = 20cm h = 11cm A = 11cm 20cm = 220cm

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Area of Parallelograms What is the area of the parallelogram? Do this on your own.

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Area of Parallelograms What is the area of the parallelogram? l = 4m h = 16m A = 4m 16m = 64m

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Area of Parallelograms Find the area of the parking space.

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Area of Parallelograms

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Find the area of the shaded region. Do this on your own.

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Area of Parallelograms Find the area of the shaded region. Area of the rectangle 25 11 = 275ft Area of the parallelogram 4 12 = 48ft The area of the shaded region is the area of the rectangle minus the area of the parallelogram, 275ft - 48ft = 227ft

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Area of Parallelograms Find the area of the shaded region.

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Area of Parallelograms Find the area of the shaded region. Area of the square 6 6 = 36cm Area of the parallelogram 15 8 = 120cm The area of the shaded region is the area of the parallelogram minus the area of the square, 120cm - 36cm = 84cm

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Area of Parallelograms What is the height of the parallelogram if the area is 32 in? 8 in

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Area of Parallelograms

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What is the length of the parallelogram if the area is 17.85 cm?

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Area of Parallelograms

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Area of Triangles

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The formula for the area of a triangle is h h l b The base of a triangle is the same as the length of a parallelogram or rectangle.

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Area of Parallelograms The base is the same as length. I prefer to use the term length, but most formulas use base. The base in this instance has a lower case b.

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Area of Triangles Find the area of the triangle. Do this on your own.

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Area of Triangles Find the area of the triangle. A = A = 12u

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Area of Triangles Find the area of the triangle. Do this on your own.

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Area of Triangles

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Find the area of the triangle. Do this on your own.

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Area of Triangles 38.72m

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Area of Triangles Consuela made a triangular box as shown. What is the area of the top of the box? Do this on your own.

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Area of Triangles

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What is the area of the white section in the flag? Do this on Your own.

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Area of Triangles

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If the area of a triangle is 245 in and the height is 14 in, what is the base?

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Area of Triangles

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If the area of a triangle is 256.5 cm and the length is 27 cm, what is the height?

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Area of Triangles

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Area of Parallelograms Is a square a parallelogram? Why is the formula to find the area of a rectangle the same as the formula to find the area of a parallelogram?

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Area of Parallelograms Is a square a parallelogram? Why is the formula to find the area of a rectangle the same as the formula to find the area of a parallelogram? A parallelogram is just a rectangle where a part has been moved.

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Area of Triangles Is a square a parallelogram? Why is the formula to find the area of a triangle half of the formula to find the area of a rectangle?

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Area of Triangles Is a square a parallelogram? Why is the formula to find the area of a triangle half of the formula to find the area of a rectangle? A rectangle is just two congruent triangles.

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Area of Parallelograms Is a square a parallelogram? If x = 5 and y, x, which figure has a greater area? Explain.

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Area of Parallelograms Is a square a parallelogram? If x = 5 and y, x, which figure has a greater area? Explain. The rectangle; The area of the rectangle is 5y units. Since the height of the parallelogram is less than y, the area must be less than 5y units.

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Area of Parallelograms Agenda Notes Homework Homework 6.9.1/6.9.2 Due Monday, March 9 Mid-Chapter 6.9 Quiz Tuesday, March 10