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Basic Geometry

Complementary Angle Subtraction

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

Common Complementary Angles
Five Degree Complementary Angles
Arbitrary Complementary Angles

Supplementary Angle Subtraction

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

Common Supplementary Angles
Five Degree Supplementary Angles
Arbitrary Supplementary Angles

Parallel, Perpendicular, Intersecting

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

Simple Parallel, Perpendicular and Intersecting Lines
Parallel, Perpendicular and Intersecting Lines
Joined/Unjoined Lines
More Joined/Unjoined Lines
Unjoined Lines Only

Angles, Right, Obtuse, Acute

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

Simple Right, Acute or Obtuse Angles
Rotated Simple Right, Acute or Obtuse Angles
Right, Acute or Obtuse Angles
Rotated Right, Acute or Obtuse Angles
Angles Near Perpendicular
Rotated Angles Near Perpendicular

Basic Shapes

Identify and name basic quadrilaterals, triangles and polygons.

Name the Shapes
Name the Rotated Shapes
Name the Quadrilaterals
Name the Rotated Quadrilaterals
Name the Triangles
Name the Rotated Triangles

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 Set 1
Area and Perimeter of Rectangles Set 3
Area and Perimeter of Rectangles Set 3

Circles - Diameter and Radius

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

Diameter from Radius, Radius From Diameter
Diameter or Radius from Circumference
Diameter or Radius from Area
Diameter or Radius from Cirumference or Area

Circles - Area and Circumference

Worksheets to calculate circle area and circumference.

Area, Circumference from Radius, Diameter
Area, Circumference from Radius, Circumference
Area, Circumference from Radius, Area
Area, Circumference from Circumference, Area

Circles - Relationhips

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

Calculate Circle Radius, Diameter, Circumference, Area 1
Calculate Circle Radius, Diameter, Circumference, Area 2

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