Years 3 to 6
Geometry Index

Geometry (Plane)
Area of Triangles Without Right Angles
Pi
Activity: Find an Approximate Value For Pi
Activity: Garden Area
Activity: Symmetry of Shapes
Activity: The Olympic Athletics Track
Activity: Tomatoes for the Garden
Acute Angles
Alien Mask From Coordinates
Angles - Acute, Obtuse, Straight and Right
Angles on a Straight Line Add to 180
Area
Area Calculation Tool
Area of Circle, Triangle, Square, Rectangle, Parallelogram, Trapezium, Ellipse and Sector
Area of Irregular Polygons
Circle
Circle Sector and Segment
Congruent
Congruent Triangles
Definition of Acute Angle
Definition of Angle
Definition of Arm of an Angle
Definition of Axis of Symmetry
Definition of Center / Centre
Definition of Chord
Definition of Circle
Definition of Congruent
Definition of Diameter
Definition of Hexagon
Definition of Intersection
Definition of Isosceles Triangle
Definition of Kite
Definition of Line
Definition of Line Segment
Definition of Line Symmetry
Definition of Mirror Image
Definition of Obtuse Angle
Definition of Octagon
Definition of Parallel
Definition of Parallel Lines
Definition of Parallelogram
Definition of Pentagon
Definition of Perimeter
Definition of Perpendicular
Definition of Perpendicular Lines
Definition of Polygon
Definition of Quadrilateral
Definition of Radius
Definition of Ray
Definition of Rectangle
Definition of Reflection Symmetry
Definition of Rhombus
Definition of Right Angle
Definition of Scalene Triangle
Definition of Similar
Definition of Square
Definition of Straight Angle
Definition of Symmetry
Definition of Transversal
Definition of Trapezoid
Definition of Triangle
Definition of Visual Estimation
Degrees (Angles)
Diplodocus Using Coordinates
Exterior Angle
Exterior Angles of Polygons
Geometry - Reflection
Heron's Formula
Hexagon
How To Find if Triangles are Congruent
How To Find if Triangles are Similar
Interactive Quadrilaterals
Interactive Triangles
Interior Angle
Interior Angles of Polygons
Line in Geometry
Lines of Symmetry of Plane Shapes
Obtuse Angle Examples
Parallel Lines, and Pairs of Angles
Pentagon
Perimeter
Perpendicular and Parallel
Point Symmetry
Polygons
Pythagorean Theorem Proof
Quadrilaterals - Square, Rectangle, Rhombus, Trapezoid, Parallelogram
Reflection Symmetry
Reflex Angles
Regular 2D Shapes - Polygons
Regular Polygons - Properties
Right Angle Triangles
Right Angles
Rotational Symmetry
Sam Loyd's Juggler Puzzle
Shapes Freeplay
Similar
Similar Triangles
Straight Angles
Supplementary Angles
Symmetry - Reflection and Rotation
Symmetry Artist
Symmetry Jigsaw Puzzles
Theorems about Similar Triangles
Transformations
Transversals
Triangles - Equilateral, Isosceles and Scalene
Triangles Contain 180 Degrees
Uncross the Lines
Using a Protractor
Using a Ruler and Drafting Triangle
Visual Estimation
Geometry (Solid)
Activity: Investigating the Platonic Solids and other solids
Count the 3D Blocks
Cube Model Template
Cube Net Template
Cuboids, Rectangular Prisms and Cubes
Definition of Cone
Definition of Cube
Definition of Cylinder
Definition of Edge
Definition of Face
Definition of Prism
Definition of Pyramid
Definition of Rectangular Prism
Definition of Sphere
Definition of Vertex
Dodecahedron Model Template
Dodecahedron Net Template
Fair Dice
Icosahedron Model Template
Icosahedron Net Template
Octahedron Model Template
Octahedron Net Template
Pentomino Challenge
Pentomino Puzzle
Platonic Solids
Platonic Solids Construction Tips
Polyhedrons
Prisms with Examples
Pyramids
Set of All Points
Sphere
Spinning Cone
Spinning Cube (Hexahedron)
Spinning Cylinder
Spinning Dodecahedron
Spinning Icosahedron
Spinning Octahedron
Spinning Pentagonal Pyramid
Spinning Square Pyramid
Spinning Tetrahedron
Spinning Triangular Pyramid
Tetrahedron Model Template
Tetrahedron Net Template
Torus
Vertices, Edges and Faces
Volume of a Cuboid

 

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