Draw some quadrilaterals on a 9-point circle and work out the angles. Is there a theorem?
Take any prime number greater than 3 , square it and subtract one. Working on the building blocks will help you to explain what is special about your results.
This group tasks allows you to search for arithmetic progressions in the prime numbers. How many of the challenges will you discover for yourself?
Starting with one of the mini-challenges, how many of the other mini-challenges will you invent for yourself?
Do you have enough information to work out the area of the shaded quadrilateral?
Explore the properties of matrix transformations with these 10 stimulating questions.