Area and Perimeter Concepts

In this lesson, Mr. Hul guides students through solving unknown area problems on the coordinate plane. The lesson begins with identifying vertices of a parallelogram and constructing a rectangle around it. Students learn to calculate the areas of rectangles and triangles using given formulas. The lesson also includes a comparison of figures R and P, focusing on their bases and areas. Finally, students are given exercises to practice finding areas of triangles and quadrilaterals, reinforcing the concepts taught.

What is the x-coordinate of vertex A in the parallelogram?

• -3

• 0

• 5

• 2

Which tool is suggested to use for drawing the rectangle around the parallelogram?

• Compass

• Set Square

• Protractor

• Ruler

What is the formula for the area of a rectangle?

• Base x Height

• Base x Width

• Length x Width

• Height x Length

How do you find the area of a parallelogram using the areas of triangles S and T?

• Multiply the areas of S and T

• Divide the area of the rectangle by the sum of S and T

• Subtract the areas of S and T from the rectangle

• Add the areas of S and T

What is the base length of the rectangle R compared to the parallelogram?

• 8

• 3

• 5

• 6

What is the area of rectangle R?

• 30

• 48

• 24

• 60

What is the formula for the area of a triangle?

• Base x Height

• 1/2 x Base x Height

• Length x Width

• Base + Height

Which method can be used to find the area of a quadrilateral?

• Using the formula for a triangle

• Using the formula for a trapezoid

• Using the formula for a rectangle

• Using the formula for a circle

What is the area of the triangle ABC if the base is 7 and the height is 4?

• 21

• 35

• 28

• 14

What is the total area of the quadrilateral if the areas of the triangles are 2.5, 5, and 10?

• 12.5

• 15

• 17.5

• 20