A directory of useful objects found on the web for teaching Maths.
Identify corresponding, alternate and co-interior angles when two parallel straight lines are crossed by a transversal (ACMMG163) * defining and classifying angles such as acute, right, obtuse, straight, reflex and revolution, and pairs of angles such as complementary, supplementary, adjacent and vertically opposite * constructing parallel and perpendicular lines using their properties, a pair of compasses and a ruler, and dynamic geometry software