Free geometry worksheets and activities

This geometry section will help your child to become familiar with the basic concepts of planes, spaces, points, lines, the x-y-z coordinate system, angles, circle geometry, perimeters, area, and volume.

Note: Each of the sub-sections listed below includes a listing of related geometry worksheets for practice with the concepts.

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Practice with almost 100 geometry, each with optional answer sheet.

Define geometry terms. e.g. those associated with lines, angles, triangles, etc.

View a listing of common geometry formulas. e.g. for calculating circumference, area, and volume.

Shapes and Figures

See descriptions and illustrations of various 2D Shapes. e.g. polygons, triangles, parallelograms.

View illustrations of common 3D shapes such as pyramids, cones, cylinders, spheres, etc.

Discover the properties of special types of quadrilaterals including the Rhombus and the Kite.

Lines and Angles

Take a foundation lesson on angles that illustrates how angle measurement is related to parts of a circular rotation.

Learn how to use a protractor to measure angles and draw angles.

Calculate unknown angles by adding and subtracting adjacent angles.

Explore the relationships between supplementary, corresponding, and alternate angles

Find "missing angles" by using the relationships between angles formed by various shapes.

Try the lesson on lines of symmetry with activities and worksheets to develop and understanding of symmetry.

Area and Volume

Calculate area of different shapes and learn about of the various associated units of measurement.

Use formulas to calculate the volume of rectangular prisms, cylinders, cones, and spheres.

Discover how nets are used to help understand and calculate the surface area of 3D shapes.

Find the perimeter of various shapes including rectangles, squares, and other polygons.

Coordinate System

Explore how x and y-axes on a grid are used to locate the coordinates of ordered pairs.

Graph coordinate pairs representing real-world linear relationships.

Pythagorean Theorem

Calculate the length of a right-triangles sides using Pythagoras' Theorem.

Find the distance between two points given two coordinates.

Congruence, Similarity & Transformations

Get started with transformations with a lesson on congruence of triangles and other shapes.

Understand the concept of similarity with triangles and other similar shapes.

Take a lesson on transformations including translations, rotations, and reflections.

Transform the size of shapes with dilations calculate and plot transformations on a Cartesian plane.