You may also like
Linkage
Four rods, two of length a and two of length b, are linked to form a kite. The linkage is moveable so that the angles change. What is the maximum area of the kite?
Making Rectangles, Making Squares
How many differently shaped rectangles can you build using these equilateral and isosceles triangles? Can you make a square?
The Cyclic Quadrilateral
This gives a short summary of the properties and theorems of cyclic quadrilaterals and links to some practical examples to be found elsewhere on the site.
Age 11 to 14
Challenge Level
When I play "Think of a number" trying to identify a number between 1 and 100, I can start by asking:
"Is it 52?" or "Is it less than 5?", but I usually choose to ask
"Is it even?" or "Is it greater than 50?"
Can you see why I prefer the second set of questions?
Can you find similar questions to ask for "Guess my Quad" game?
Copyright © 1997 - 2023. University of Cambridge.
All rights reserved.
NRICH is part of the family of activities in the Millennium Mathematics Project.
NRICH is part of the family of activities in the Millennium Mathematics Project.