Triangles
What is the area formula for a triangle?
1/2bh
1/2 x b x h
bh
bxh
What is the area formula for a trapezoid?
b1 + b2/ 2 x h
l x w
I am a flat shape with four straight sides. What am I?
The height of the triangle is 5cm.
What is the area of the triangle?
25cm2
The base is 12 feet. The height is 20 feet. What is the area?
240ft2
Find the area.
B1= 6in
B2= 8in
H= 3in
49in2
The length of the rectangle is 42cm and the width is 30cm. What is the area?
1,260 cm2
I am a quadrilateral with four right angles. What am I?
Rectangle
Square
Jan's triangular shaped art project has a base of 4in and a height of 6in. What is the area?
12in2
Mila's parallelogram shaped living room has a base of 20 ft and a height of 30 ft. What is the area of her living room?
600ft2
Joey's garden is in the shape of a trapezoid. The two base lengths are 8yd and 10yd. The height is 6yd. What is the area of the garden?
54yd2
The rectangular flowerbed in front of the salon has a length of 12 feet and a width of 4 feet. What is the area of the flowerbed?
48ft2
I am a quadrilateral with equal side lengths. What am I?
Square
Rhombus
Amanda has a square-shaped poster board. The dimensions of the poster board are 6in by 6in. If she creates 2 equal sized triangles by cutting the poster board in half, what will the area of the triangle be?
18in2
Laura's parallelogram shaped yard has a base of 12 feet. The area of the yard is 60ft2. What is the height of the parallelogram shaped yard?
5 ft
A wooded area is in the shape of a a trapezoid whose bases measure 40 m and 30 m and its height is 10 m. Calculate the area of the wooded area.
A handrail needs to be built around a rectangular play area. The length of the play area is 8 yards. The width of the play area is 6 yards. How long does the handrail need to be?
28 yards
I am a quadrilateral with one pair of opposite sides parallel?
Trapezoid
Draw a picture explaining the formula for area of a triangle.
answers will vary
Jimmy has a parallelogram-shaped haunted house. The haunted house is split in half (two congruent triangles). The area of one triangle is 34in2. What is the area of the parallelogram?
68in2
Lola finds the area of her yard that is the shape of a trapezoid. The height of the trapezoid is 20 feet. The area of the yard is 160ft2. What are the possible measurements of the bases?
Answers vary
Base measurements must equal 16 when added.
The pet store's flooring needs to be replaced. The dimensions of each rectangular room are as follows.
Grooming Salon Length 20 feet Width 15 feet
Shopping Area Length 50 feet Width 35 feet
How much flooring will they need for the entire Pet store?
2,050 ft2
I am a rectangle and a rhombus. What am I?
Square