Geometry: Coordinates and Perimeter

This video tutorial covers Unit 7, Lesson 15 on shapes on the coordinate plane. It begins with calculating the dimensions, perimeter, and area of a rectangle using given coordinates. Next, it demonstrates how to draw a square with a specific perimeter, ensuring one vertex is at the origin. The tutorial then moves on to plotting points to form a polygon and calculating its perimeter. Finally, it addresses solving equations for real-world problems, such as determining weights and costs. The lesson concludes with a summary of the key concepts covered.

What are the coordinates of the rectangle mentioned in the lesson?

• (0, 0), (0, -5), (-1, 0), (-1, -5)

• (1, 0), (1, -5), (-2, 0), (-2, -5)

• (2, 0), (2, -5), (-3, 0), (-3, -5)

• (3, 0), (3, -5), (-4, 0), (-4, -5)

What is the length of the rectangle?

• 8 units

• 7 units

• 5 units

• 6 units

What is the width of the rectangle?

• 6 units

• 3 units

• 4 units

• 5 units

What is the difference between the x-coordinates of the rectangle's vertices?

• 5

• 8

• 6

• 7

What is the difference between the y-coordinates of the rectangle's vertices?

• 6

• 5

• 4

• 3

How do you calculate the perimeter of the rectangle?

• Subtract the width from the length

• Add all the sides together

• Add the length and width and multiply by 2

• Multiply the length by the width

What is the perimeter of the rectangle?

• 20 units

• 24 units

• 22 units

• 26 units

What formula is used to find the area of a rectangle?

• Base x Height

• Length - Width

• Length + Width

• 2 x (Length + Width)

What is the area of the rectangle?

• 35 units squared

• 30 units squared

• 32 units squared

• 34 units squared

Where should one vertex of the square be placed?

• At (3, 3)

• At (2, 2)

• At the origin

• At (1, 1)