Estimating Angles
Estimate the size of the given acute angles in degrees.
Area of a Triangle
Calculate the areas of the given triangles in this self marking quiz.
Angle Points
Apply the properties of angles at a point, angles on a straight line and vertically opposite angles.
Angles in a Triangle
A self marking exercise involving calculating the unknown angle in a triangle.
Area Maze
Use your knowledge of rectangle areas to calculate the missing measurement of these composite diagrams.
Area Two
How many different shapes with an area of 2 square units can you make by joining dots on this grid with straight lines?
Polygons
Name the polygons and show the number of lines and order of rotational symmetry.
Angle Parallels
Understand and use the relationship between parallel lines and alternate and corresponding angles.
Angle Chase
Find all of the angles on the geometrical diagrams.
Quad Areas
Calculate the areas of all the possible quadrilaterals that can be constructed by joining together dots on this grid.
Volume
Use formulae to solve problems involving the volumes of cuboids, cones, pyramids, prisms and composite solids.
Measuring Units
Check your knowledge of the units used for measuring with this self-marking quiz about metric and imperial units.
Transformations
Draw transformations online and have them instantly checked. Includes reflections, translations, rotations and enlargements.
Polygon Angles
A mixture of problems related to calculating the interior and exterior angles of polygons.
Polygon Pieces
Arrange the nine pieces of the puzzle on the grid to make different polygons.
Polybragging
The Transum version of the Top Trumps game played online with the properties of polygons.
Areas of Composite Shapes
Find the areas of combined (composite) shapes made up of one or more simple polygons and circles.
Circle Theorems Exercise
Show that you understand and can apply the circle theorems with this self marking exercise.
Polygon Properties
Connect the names of the polygons with the descriptions of their properties.
Formulae Pairs
Find the matching pairs of diagrams and formulae for basic geometrical shapes.
Congruent Triangles
Test your understanding of the criteria for congruence of triangles with this self-marking quiz.
Angles Mixed
Find the unknown angles by using the basic angle theorems.
Proof of Circle Theorems
Arrange the stages of the proofs for the standard circle theorems in the correct order.
Geometry Toolbox
Create your own dynamic geometrical diagrams using this truly amazing tool from GeoGebra.
Surface Area
Work out the surface areas of common solid shapes in this collection of exercises.
Congruent Parts
Use the colours to dissect the outlines into congruent parts.
Similar Parts
Use the colours to dissect the outlines into similar parts.
Polygon Areas
Investigate which polygons have an area of 4 square units on this interactive dotty grid.
Area shapes
Investigate polygons with an area of 4 square units. This is your starting point, you can decide how to proceed.
Pin Board
Rows and columns of dots that can be joined using straight lines to create shapes.
Tessellations
Drag the shapes onto the canvas to create tessellating patterns then try the tessellations quiz.
How Many Rectangles?
Investigate the number of rectangles on a grid of squares. What strategies will be useful in coming up with the answer?
Rectangle Perimeters
The perimeter of a rectangle is 28cm. What could its area be?
Polygon Hunting
Find all the polygons that can be drawn by joining dots on this seven dot grid.
Maxvoltray
Find the maximum volume of a tray made from an A4 sheet of paper. A practical mathematical investigation.
This is the main Transum help video on Geometry.
Angle Points Video
See a demonstration of angles in a full turn around a point, angles together on a straight line and vertically opposite angles.
Parallelogram
Instructional video showing how the area of a parallelogram can be determined.
Different types of Triangle
Euclid and his friends explain how many different kinds of triangle there are.
Construct a congruent triangle
Construction (with compass and straight edge) of a triangle congruent to a given triangle.
Circle Song
This song helps students remember circle terminology (radius & diameter) and the formulas for area and circumference.
Polygon Angles Video
A concise reminder about angles, both interior and exterior, in regular and irregular polygons.
Naming Polygons
An exploration of the terminology, etymology and structure of naming polygons
Congruent Triangles Video
Learn the conditions for two triangles to be congruent and then use this information to solve problems.
Kite Maths
Can you make a kite shape from a single A4 size sheet of paper using only three folds?
Polygons
Name the polygons and show the number of lines and order of rotational symmetry.
Angle Theorems
Diagrams of the angle theorems with interactive examples.
Circle Parts Kim's Game
A memory game to be projected to help the whole class revise the names for the parts of a circle.
Polygon Angles Animation
Barbara Bug walks around a regular hexagon turning through each of the exterior angles as she goes.
Pin Board
Rows and columns of dots that can be joined using straight lines to create shapes.
Circle Theorems
Diagrams of the circle theorems to be projected onto a white board as an effective visual aid.
Geometry Toolbox
Create your own dynamic geometrical diagrams using this truly amazing tool from GeoGebra.
Angle Estimates
Estimate the sizes of each of the angles then add your estimates together.
Area Two
How many different shapes with an area of 2 square units can you make by joining dots on this grid with straight lines?
Christmas Tables
Which of the two shapes has the largest area? You will be surprised!
Cross Perimeter
Calculate the distance around the given shape
Dice Reflections
A dice is reflected in two mirrors. What numbers can be seen?
Hexagon
On a full page in the back of your exercise book draw a perfectly regular hexagon.
Mathterpiece
Memorise a picture made up of geometrical shapes
Oblongs
Find the dimensions of a rectangle given the perimeter and area.
Pentagon
On a full page in the back of your exercise book draw a perfectly regular pentagon.
Polygon Riddle 1
Solve the riddle to find the name of the polygon then sum the interior angles.
Quad Areas
Calculate the areas of all the possible quadrilaterals that can be constructed by joining together dots on this grid.
Reflective Cat
On squared paper copy the drawing of the face then reflect it in three different lines.
Rotational Symmetry
Draw a pattern with rotational symmetry of order 6 but no line symmetry.
Sectors
Work out which sectors fit together to make complete circles. Knowledge of the sum of the angles at a point will help find more than one correct solution to this puzzle.
Square Angles
Find a trapezium, a triangle and a quadrilateral where all of the angles are square numbers.
Square Circle Kite
Write down the names of all the mathematical shapes you know.
Stair Perimeter
Use the information implied in the diagram to calculate the perimeter of this shape.
Step Perimeter
Is it possible to work out the perimeter of this shape if not all the side lengths are given?
61 items are currently in this category.
Teachers might find the complete Geometry Topic List useful.
Geometry is a branch of mathematics concerned with
questions of shape, size, relative position of figures, and the properties of
space. Geometry arose independently in a number of early cultures as a body of
practical knowledge concerning lengths, areas, and volumes, with elements of a
formal mathematical science emerging in the West as early 6th Century BC.
See also the topics of
Angles,
Area,
Bearings,
Circles,
Enlargements,
Mensuration,
Pythagoras,
Shape,
Shape (3D),
Symmetry,
Transformations and
Trigonometry.
