Area and Properties of Parallelograms

Miss White teaches seventh graders about unknown area problems on the coordinate plane. The lesson covers finding coordinates of a parallelogram's vertices, drawing a rectangle around it, and calculating the areas of the rectangle and triangles. Students learn to use these areas to find the area of the parallelogram. The lesson includes example problems to reinforce the concepts.

What is the main focus of the lesson introduced by Miss White?

• Graphing linear functions

• Understanding fractions

• Unknown area problems on the coordinate plane

• Solving equations

What are the coordinates of point A in the parallelogram?

• (5, 2)

• (-3, -4)

• (3, 4)

• (0, 2)

What is the base length of the rectangle surrounding the parallelogram?

• 6 units

• 8 units

• 7 units

• 5 units

How do you calculate the area of a triangle?

• Base times height

• Length times width

• Base times height divided by two

• Base plus height

What is the area of the rectangle surrounding the parallelogram?

• 54 square units

• 36 square units

• 42 square units

• 48 square units

What is the area of one of the triangles formed within the rectangle?

• 15 square units

• 12 square units

• 6 square units

• 9 square units

How is the area of the parallelogram calculated?

• Area of rectangle divided by area of triangles

• Area of rectangle plus area of triangles

• Area of rectangle minus area of triangles

• Area of rectangle times area of triangles

What is the final area of the parallelogram?

• 30 square units

• 35 square units

• 20 square units

• 25 square units

What is the area of the triangle in the additional example?

• 16 square units

• 10 square units

• 12 square units

• 14 square units

What is the total area of the quadrilateral ABCD in the additional example?

• 15.5 square units

• 16.5 square units

• 18.5 square units

• 17.5 square units