Geometry Worksheet — KS3 — Beginner
Geometry worksheet for Key Stage 3 / Year 7-9 (Ages 11-14). Beginner level maths practice, aligned to the UK National Curriculum. Print-ready with answer key included.
Exploring Basic Geometry Concepts
Key Stage 3 / Ages 11-14 / Beginner Level
Instructions: This worksheet will guide you through fundamental geometry concepts. You'll explore angles, shapes, and basic geometric calculations. Follow the instructions for each activity and make sure to show your work where required.
Identifying Types of Angles
Look at the angles below. Identify each type of angle as acute, right, obtuse, or straight. Write your answer in the box provided.
Calculating the Perimeter of Shapes
Calculate the perimeter of each shape shown. Use the given dimensions and write your answer in the box provided.
1. Rectangle with sides 5 cm and 3 cm
2. Square with side 4 cm
3. Triangle with sides 3 cm, 4 cm, and 5 cm
Understanding Symmetry
Determine if the following shapes are symmetrical. Write 'Yes' if they are symmetrical and 'No' if they are not.
Classifying Triangles by Angles
Classify each triangle by its angles: acute, right, or obtuse. Write your answer in the box provided.
1. Triangle with angles 60°, 60°, 60°
2. Triangle with angles 90°, 45°, 45°
3. Triangle with angles 120°, 30°, 30°
Calculating Area of Rectangles
Calculate the area of each rectangle using the formula Area = length × width. Write your answer in the box provided.
1. Rectangle with length 7 cm and width 4 cm
2. Rectangle with length 5 cm and width 3 cm
3. Rectangle with length 8 cm and width 2 cm
Exploring 3D Shapes
Identify the 3D shape based on its description and write the name of the shape in the box provided.
1. A shape with six equal square faces
2. A shape with a circular base and a pointed top
3. A shape with two parallel circular bases
Identifying Parallel and Perpendicular Lines
Look at the pairs of lines below. Identify if they are parallel or perpendicular. Write your answer in the box provided.
Volume of Cubes
Calculate the volume of each cube using the formula Volume = side³. Write your answer in the box provided.
1. Cube with side 3 cm
2. Cube with side 5 cm
3. Cube with side 2 cm
Activity 1: acute ; right ; obtuse ; straight
Activity 2: 16 cm ; 16 cm ; 12 cm
Activity 3: Yes ; No ; Yes ; No
Activity 4: acute ; right ; obtuse
Activity 5: 28 cm² ; 15 cm² ; 16 cm²
Activity 6: Cube ; Cone ; Cylinder
Activity 7: Parallel ; Perpendicular ; Perpendicular
Activity 8: 27 cm³ ; 125 cm³ ; 8 cm³
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