Lesson: Perimeter and Area of Triangles

Drag and Drop

What is associated with the Fall?​ ​

Placeholder

​ ​

Drag these tiles and drop them in the correct blank above

leaves changing colors

snow

holly leaves

red bows

evergreen trees

heavy coats

Labelling

Identify the parts of the plant cell.

Drag labels to their correct position on the image

chloroplast

nucleus

nucleolus

endoplasmic reticulum

cell membrane

cell wall

mitochondrion

Poll

What is your favorite thing about the fall season?

• all things pumpkin spice

• changing of the leaves

• cooler weather

• Halloween and Thanksgiving

Hotspot

Identify the states that are part of the Southwest region.

Graphing

Drag the points to create the following equation:

$$y=-\frac{2}{3}x+6$$

Lesson: Perimeter and Area of Triangles

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Perimeter of Triangles

• Triangle has 3 sides

• Perimeter = Add up all 3 sides

Multiple Select

Select all of the sides of the triangle.

• 12 cm

• 14 cm

• 16 cm

• 8 cm

Multiple Choice

Find the perimeter.

• 50 cm

• 36 cm

• 38 cm

• 34 cm

Multiple Select

Select all of the sides of the triangle.

• 26 m

• 20 m

• 15 m

• 12 m

Multiple Choice

Find the perimeter.

• 73 m

• 58 m

• 47 m

• 61 m

Area of Triangles

• A triangle is HALF of a rectangle

• Rectangle formula = Length x Width or Base x Height

• Triangle formula = 1/2 * base * height

Area of Triangles

• Base means the bottom of a triangle

• Height must be straight and tall = makes a 90^o angle with the base (perpendicular)

• Triangle formula = 1/2 * base * height

Multiple Choice

What is the BASE?

• 60 yd

• 40 yd

• 75 yd

Multiple Choice

What is the HEIGHT?

• 60 yd

• 40 yd

• 75 yd

Multiple Select

Select all of the units that correctly label area.

• cm

• yd²

• ft

• m

• ft²

Multiple Choice

What is the area?

A = 1/2bh (1/2 x base x height)

• 175 yd

• 2,400 yd²

• 1,500 yd²

• 1200 yd²

Multiple Choice

What is the BASE?

• 14 cm

• 12 cm

• 16 cm

• 8 cm

Multiple Choice

What is the HEIGHT?

• 14 cm

• 12 cm

• 16 cm

• 8 cm

Multiple Choice

What is the area?

A = 1/2bh (1/2 x base x height)

• 48 cm²

• 112 cm²

• 56 cm²

• 36 cm

Multiple Choice

What is the BASE?

• 20 m

• 26 m

• 15 m

• 12 m

Multiple Choice

What is the HEIGHT?

• 20 m

• 26 m

• 15 m

• 12 m

Multiple Choice

What is the area?

A = 1/2bh (1/2 x base x height)

• 240 m²

• 120 m²

• 150 m²

• 300 m²

Multiple Choice

Find the area of this triangle.

• 150 ft²
• 100 ft²
• 50 ft²
• 35 ft²

Multiple Choice

Find the perimeter of this triangle.

• 150 ft
• 100 ft
• 20 ft
• 35 ft

Multiple Choice

Find the area of this triangle.

• 240 ft²
• 56 ft²
• 66 ft²
• 120 ft²

Multiple Choice

Find the perimeter of this triangle.

• 240 ft
• 56 ft
• 66 ft
• 120 ft

Multiple Choice

Find the perimeter of this triangle.

• 12 in

• 22 in

• 18 in

• 24 in

Multiple Choice

Find the area of this triangle.

• 12 in²
• 22 in²
• 18 in²
• 24 in²

Multiple Choice

Find the area of the triangle.

• 25.5 cm sq

• 16.83 cm sq

• 18.51 cm sq

• 15.81 cm sq

Multiple Choice

Find the area of the triangle.

• 42 yd

• 17.1 yd

• 42 yd sq

• 17.1 yd sq