3rd grade level geometry/perimeter 3rd grade level geometry/perimeter
Name:
Date:
1. Fill in the chart for each shape.
Shape Shape Name Sides Vertices
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2. Which shape has 4 right angles (square corners)?
A
B
C
D
Answer:
3. A shape has 4 equal sides and 4 right angles.
a. Name the shape:
b. Draw the shape in the box on the right.
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3rd grade level geometry/perimeter
Name:
Date:
4. Find the perimeter of the triangle.
6 cm 8 cm 7 cm
Work:
Perimeter = cm
5. Find the perimeter of the rectangle.
9 m 9 m 4 m 4 m
Work:
Perimeter = m
6. A square sandbox has sides that are each 5 feet long. What is its perimeter?
5 ft
Work:
Perimeter = ft
7. Liam is putting a border around a picture that is 10 inches long and 6 inches wide. How many inches of border does he need?
Answer: inches
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3rd grade level geometry/perimeter Answer Key 3rd grade level geometry/perimeter (Answer Key)
Name: Answer Key
Date:
1. Fill in the chart for each shape.
Shape Shape Name Sides Vertices Triangle 3 3 Rectangle 4 4 Pentagon 5 5 Hexagon 6 6
2. Which shape has 4 right angles (square corners)?
A
B
C
D
Answer: A
3. A shape has 4 equal sides and 4 right angles.
a. Name the shape: Square
b. Draw the shape in the box on the right.
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3rd grade level geometry/perimeter (Answer Key)
Name: Answer Key
Date:
4. Find the perimeter of the triangle.
6 cm 8 cm 7 cm
Work: \(6 + 8 + 7 = 21\)
Perimeter = 21 cm
5. Find the perimeter of the rectangle.
9 m 9 m 4 m 4 m
Work: \(9 + 4 + 9 + 4 = 26\)
Perimeter = 26 m
6. A square sandbox has sides that are each 5 feet long. What is its perimeter?
5 ft
Work: \(5 + 5 + 5 + 5 = 20\) (or \(4 \times 5 = 20\))
Perimeter = 20 ft
7. Liam is putting a border around a picture that is 10 inches long and 6 inches wide. How many inches of border does he need?
Work: \(10 + 6 + 10 + 6 = 32\)
Answer: 32 inches
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Shape Master Pop Quiz Name:
Date:
1. Label each diagram using the words below:
Parallel Lines • Perpendicular Lines • Acute Angle • Obtuse Angle
2. Complete the chart for each polygon.
Shape Shape Name Pairs of Parallel Sides (0, 1, or 2) Has Right Angles? (Yes / No) Right Triangle
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3. How many lines of symmetry does each figure have?
Equilateral Triangle
Lines:
Letter H
Lines:
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Name:
Date:
4. The perimeter of this rectangle is 42 cm. The length is 14 cm. Find the width (\(w\)).
14 cm 14 cm w w
Work:
Width (\(w\)) = cm
5. Find the missing side lengths, then find the total perimeter of the figure.
8 m 9 m 14 m 4 m b a
Side a = m
Side b = m
Work:
Total Perimeter = m
6. Caleb has 60 feet of fencing for a rectangular pen. The length is 18 feet. What is the width?
Width = feet
7. A rectangle is 10 cm long and 6 cm wide. A square has the same perimeter as the rectangle. What is the side length of the square?
Square side length = cm
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Shape Master Answer Key Name: Answer Key
Date:
1. Label each diagram using the words below:
Parallel Lines • Perpendicular Lines • Acute Angle • Obtuse Angle
Perpendicular Lines
Parallel Lines
Acute Angle
Obtuse Angle
2. Complete the chart for each polygon.
Shape Shape Name Pairs of Parallel Sides (0, 1, or 2) Has Right Angles? (Yes / No) Right Triangle 0 Yes Trapezoid 1 No Parallelogram 2 No
3. How many lines of symmetry does each figure have?
Equilateral Triangle
Lines: 3
Letter H
Lines: 2
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Name: Answer Key
Date:
4. The perimeter of this rectangle is 42 cm. The length is 14 cm. Find the width (\(w\)).
14 cm 14 cm w w
Work: \(42 - (14 + 14) = 14 \implies 14 \div 2 = 7\)
Width (\(w\)) = 7 cm
5. Find the missing side lengths, then find the total perimeter of the figure.
8 m 9 m 14 m 4 m b a
Side a = 6 m (14 − 8)
Side b = 5 m (9 − 4)
Work: \(8 + 5 + 6 + 4 + 14 + 9 = 46\)
Total Perimeter = 46 m
6. Caleb has 60 feet of fencing for a rectangular pen. The length is 18 feet. What is the width?
Work: \(18 \times 2 = 36 \implies 60 - 36 = 24 \implies 24 \div 2 = 12\)
Width = 12 feet
7. A rectangle is 10 cm long and 6 cm wide. A square has the same perimeter as the rectangle. What is the side length of the square?
Work: \(2 \times (10 + 6) = 32 \implies 32 \div 4 = 8\)
Square side length = 8 cm
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