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Resources tagged with Isosceles triangles similar to Cut and Make:

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Practical Activity. Compound transformations. Squares. Tangram. Parallelograms. Visualising. Working systematically. Isosceles triangles. Interactivities. Investigations.

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Broad Topics > 2D Geometry, Shape and Space > Isosceles triangles

Cut and Make

Stage: 2 Challenge Level:

Cut a square of paper into three pieces as shown. Now,can you use the 3 pieces to make a large triangle, a parallelogram and the square again?

Triangle Shapes

Stage: 1 and 2 Challenge Level:

This practical problem challenges you to create shapes and patterns with two different types of triangle. You could even try overlapping them.

Triangle Relations

Stage: 2 Challenge Level:

What do these two triangles have in common? How are they related?

Isosceles Triangles

Stage: 3 Challenge Level:

Draw some isosceles triangles with an area of $9$cm$^2$ and a vertex at (20,20). If all the vertices must have whole number coordinates, how many is it possible to draw?

Isosceles

Stage: 3 Challenge Level:

Prove that a triangle with sides of length 5, 5 and 6 has the same area as a triangle with sides of length 5, 5 and 8. Find other pairs of non-congruent isosceles triangles which have equal areas.

Interacting with the Geometry of the Circle

Stage: 1, 2, 3 and 4

Jennifer Piggott and Charlie Gilderdale describe a free interactive circular geoboard environment that can lead learners to pose mathematical questions.

Lighting up Time

Stage: 2 and 3 Challenge Level:

A very mathematical light - what can you see?