Circle theorems are properties that are true for all circles, regardless of their size. There are six theorems to learn and recognise. Questions can have a combination of theorems. It is important to ...

Take any quadrilateral such as ABCD above. Construct the midpoints of each side and join them to form another quadrilateral EFGH. Varignon's Theorem asserts that the ...

Next Tuesday – May 12th – is the 200th anniversary of the birth of John Casey, a notable Irish geometer. Casey was born in 1820 in Kilbeheny, Co Limerick. He was educated in nearby Mitchelstown, where ...

Abstract: We give a new corollary approach to the Newton-Gauss Line, showing collinearity using coordinate geometry and an algebraic expansion method in the Cartesian coordinate plane. Building upon ...