Perimeter and Area of Polygons

Mrs. Walker teaches students how to find the perimeter of various shapes, including polygons and rectangles, even when some measurements are unknown. The lesson includes practical exercises with rectangles, hexagons, and pentagons, emphasizing the use of addition and multiplication to solve perimeter problems. Students are encouraged to apply these strategies to solve problems independently.

What is the main focus of today's lesson?

• Calculating the volume of shapes

• Finding the area of polygons

• Determining the perimeter of polygons and rectangles with unknown measurements

• Identifying different types of polygons

In the application problem, what is the relationship between the cow pen and the sheep pen?

• The cow pen is twice the area of the sheep pen

• The cow pen has the same perimeter as the sheep pen

• The perimeter of the cow pen is double that of the sheep pen

• The cow pen is half the size of the sheep pen

How do you find the perimeter of a rectangle?

• Divide the length by the width

• Add all the side lengths together

• Subtract the width from the length

• Multiply the length by the width

What is the perimeter of a rectangle with sides measuring 9 cm and 6 cm?

• 24 cm

• 36 cm

• 28 cm

• 30 cm

In a regular hexagon, how are the side lengths related?

• All side lengths are different

• Adjacent sides are equal

• All side lengths are equal

• Opposite sides are equal

What is the perimeter of a regular hexagon with each side measuring 3 cm?

• 18 cm

• 24 cm

• 15 cm

• 21 cm

Which strategy is more efficient for finding the perimeter of a regular pentagon?

• Using division

• Using subtraction

• Using multiplication

• Using addition

What is the perimeter of a regular pentagon with each side measuring 7 inches?

• 49 inches

• 42 inches

• 35 inches

• 28 inches

What should you do if you encounter unknown measurements in a problem?

• Ignore them

• Use known properties of shapes to find them

• Guess the measurements

• Skip the problem