Top Banner
5 Minute Check Find the area. Complete in your notebook. 1. 2. 6in 13.5ft 9in 2.5ft 3. 1.2cm 4. 3 m 9.8cm 12 m
61

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

Dec 27, 2015

Download

Documents

Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
  • Slide 1
  • 5 Minute Check
  • Slide 2
  • Find the area. Complete in your notebook. 1. 6in 9in
  • Slide 3
  • 5 Minute Check Find the area. Complete in your notebook. 1. 6in 9in 9 in 6in = 54 in
  • Slide 4
  • 5 Minute Check Find the area. Complete in your notebook. 2. 13.5ft 2.5ft
  • Slide 5
  • 5 Minute Check Find the area. Complete in your notebook. 2. 13.5ft 2.5ft 13.5 ft 2.5 ft = 33.75 ft
  • Slide 6
  • 5 Minute Check Find the area. Complete in your notebook. 3. 1.2cm 9.8cm
  • Slide 7
  • 5 Minute Check Find the area. Complete in your notebook. 1.2 cm 9.8 cm = 11.76 cm 3. 1.2cm 9.8cm
  • Slide 8
  • 5 Minute Check
  • Slide 9
  • Slide 10
  • Friday, March 6 Chapter 6.9.1/6.9.2 Area of Parallelograms And Triangles
  • Slide 11
  • Area of Parallelograms Objective: To find areas and missing dimensions of parallelograms and triangles.
  • Slide 12
  • Area of Parallelograms A polygon is a closed figure formed by 3 or more straight lines.
  • Slide 13
  • Area of Parallelograms A polygon is a closed figure formed by 3 or more straight lines. A quadrilateral is a polygon with 4 sides.
  • Slide 14
  • 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.
  • Slide 15
  • Area of Parallelograms A parallelogram is a quadrilateral with opposite sides parallel and equal in length.
  • Slide 16
  • Area of Parallelograms A rhombus is a parallelogram with all equal sides.
  • Slide 17
  • 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
  • Slide 18
  • 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
  • Slide 19
  • Area of Parallelograms What is the area of the parallelogram?
  • Slide 20
  • Area of Parallelograms What is the area of the parallelogram? A =lh l = ?
  • Slide 21
  • Area of Parallelograms What is the area of the parallelogram? A =lh l = 6 h = ?
  • Slide 22
  • Area of Parallelograms What is the area of the parallelogram? A =lh l = 6 h = 8 What is the area?
  • Slide 23
  • 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
  • Slide 24
  • Area of Parallelograms What is the area of the parallelogram? Do this on your own.
  • Slide 25
  • Area of Parallelograms What is the area of the parallelogram? l = 20cm h = 11cm A = 11cm 20cm = 220cm
  • Slide 26
  • Area of Parallelograms What is the area of the parallelogram? Do this on your own.
  • Slide 27
  • Area of Parallelograms What is the area of the parallelogram? l = 4m h = 16m A = 4m 16m = 64m
  • Slide 28
  • Area of Parallelograms Find the area of the parking space.
  • Slide 29
  • Area of Parallelograms
  • Slide 30
  • Find the area of the shaded region. Do this on your own.
  • Slide 31
  • 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
  • Slide 32
  • Area of Parallelograms Find the area of the shaded region.
  • Slide 33
  • 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
  • Slide 34
  • Area of Parallelograms What is the height of the parallelogram if the area is 32 in? 8 in
  • Slide 35
  • Area of Parallelograms
  • Slide 36
  • What is the length of the parallelogram if the area is 17.85 cm?
  • Slide 37
  • Area of Parallelograms
  • Slide 38
  • Area of Triangles
  • Slide 39
  • 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.
  • Slide 40
  • 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.
  • Slide 41
  • Area of Triangles Find the area of the triangle. Do this on your own.
  • Slide 42
  • Area of Triangles Find the area of the triangle. A = A = 12u
  • Slide 43
  • Area of Triangles Find the area of the triangle. Do this on your own.
  • Slide 44
  • Area of Triangles
  • Slide 45
  • Find the area of the triangle. Do this on your own.
  • Slide 46
  • Area of Triangles 38.72m
  • Slide 47
  • 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.
  • Slide 48
  • Area of Triangles
  • Slide 49
  • What is the area of the white section in the flag? Do this on Your own.
  • Slide 50
  • Area of Triangles
  • Slide 51
  • If the area of a triangle is 245 in and the height is 14 in, what is the base?
  • Slide 52
  • Area of Triangles
  • Slide 53
  • If the area of a triangle is 256.5 cm and the length is 27 cm, what is the height?
  • Slide 54
  • Area of Triangles
  • Slide 55
  • 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?
  • Slide 56
  • 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.
  • Slide 57
  • 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?
  • Slide 58
  • 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.
  • Slide 59
  • Area of Parallelograms Is a square a parallelogram? If x = 5 and y, x, which figure has a greater area? Explain.
  • Slide 60
  • 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.
  • Slide 61
  • 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