Currently viewing the tag: "Quadrilaterals"
See the Bendy Quads video https://bit.ly/BendyQuadsVideo
Four rods are hinged at their ends to form a convex quadrilateral with edges of length 3, 4, 5 and 6 (in that order). Investigate the different shapes that the quadrilateral can take if the polygon is always convex.
How do the angles change […]
This is the first in the ALL ABOUT SCALE sequence of lesson packs.
Watch the video http://bit.ly/ScalePaperAirplanes. The video gives instructions for making the planes but you can use your own design. Using scrap paper is more planet friendly.
Add the columns one by one, add the rows, then add the diagonals. What do you notice?
Add the numbers in the squares at the corners of each parallelogram shown. What do you notice? Yes, so far all these totals have been 34.
In addition the diagram with the […]
Investigate quadrilaterals that have inscribed circles as shown in the diagram.
Draw a circle with any radius you choose, and then draw 4 tangents making a quadrilateral with the circle inside touching the quadrilateral at 4 points.
Measure the edge lengths of the quadrilateral ABCD.
What do you notice?
Copy the table […]
If you know the sizes of the angles marked with coloured dots in the diagram which angles can you find by calculation? Explain your reasoning.
If you also know that AB and CD are parallel which angles can you find?
What extra information do you need to find all the numbered angles?
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We say that a shape tessellates if we can fit together copies of it to cover a flat surface without leaving any gaps and this covering can be extended in all directions.
The question here is “What can we find out about tessellating different quadrilaterals?”
It’s quite easy to see how […]
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