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Basic Geometry

This page contains links to free math worksheets for Basic Geometry problems. Click one of the buttons below to view a worksheet and its answer key. You can also use the 'Worksheets' menu on the side of this page to find worksheets on other math topics.

Complementary Angle Subtraction

Subtraction practice for finding complementary angles (Angles whose sum is 90 degrees).

Complementary Angle Subtraction

Supplementary Angle Subtraction

Subtraction practice for finding supplementary angles (Angles whose sum is 180 degrees).

Supplementary Angle Subtraction

Parallel, Perpendicular, Intersecting

Labelling lines as parallel, perpendicular or intersecting. Includes line shapes that imply intersection.

Parallel, Perpendicular, Intersecting

Angles, Right, Obtuse, Acute

Label angles as right, obtuse or acute. Optionally estimate or use a protractor to measure the actual angles.

Angles, Right, Obtuse, Acute

Basic Shapes

Identify and name basic quadrilaterals, triangles and polygons.

Basic Shapes

Area and Perimeter of Rectangles

Calculate the area and perimeter of rectangles given their dimensions; Also works for multiplication practice!

Area and Perimeter of Rectangles

Circles - Diameter and Radius

Worksheets to calculate radius from diameter, diameter from radius, or radius and diameter from area or circumference.

Circles - Diameter and Radius

Circles - Area and Circumference

Worksheets to calculate circle area and circumference.

Circles - Area and Circumference

Circles - Relationhips

Calculate the radius, diameter, area and circumference given one circle fact.

Circles - Relationhips