What is the same and what is different about these circle
questions? What connections can you make?
The diagonals of a square meet at O. The bisector of angle OAB meets BO and BC at N and P respectively. The length of NO is 24. How long is PC?
You are only given the three midpoints of the sides of a triangle. How can you construct the original triangle?
Can you make sense of these three proofs of Pythagoras' Theorem?
Can you make sense of the three methods to work out the area of the kite in the square?
In the diagram the radius length is 10 units, OP is 8 units and OQ
is 6 units. If the distance PQ is 5 units what is the distance P'Q'
The diagonals of a trapezium divide it into four parts. Can you
create a trapezium where three of those parts are equal in area?
In the diagram the point P' can move to different places along the
dotted line. Each position P' takes will fix a corresponding
position for P. If P' moves along a straight line what does P do ?
In the diagram the point P can move to different places around the
dotted circle. Each position P takes will fix a corresponding
position for P'. As P moves around on that circle what will P' do?
Make your own pinhole camera for safe observation of the sun, and find out how it works.
Anamorphic art is used to create intriguing illusions - can you
work out how it is done?
How would you design the tiering of seats in a stadium so that all spectators have a good view?