16 lessons covering everything from points and angles to volume, transformations, and vectors — each with theory, worked examples, practice questions, and a downloadable worksheet.
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A point is the most basic building block of geometry — an exact location in spac...
A line extends infinitely in two directions with no curves or bends — one of the...
An angle forms when two rays share a common endpoint — measuring how much one ra...
A triangle is the simplest possible polygon, with just three sides and three ang...
Two figures are congruent if they are exactly the same shape and size — one coul...
Similar figures have the same shape but not necessarily the same size — one is a...
A circle is the set of all points the same distance from a fixed center point — ...
A polygon is any closed shape made entirely of straight line segments — from sim...
Coordinate geometry places shapes onto a grid using x and y coordinates, letting...
Area measures how much flat space a two-dimensional shape covers — a fundamental...
Perimeter measures the total distance around the outside edge of a shape — simpl...
Surface area measures the total area covering the outside of a three-dimensional...
Volume measures how much three-dimensional space a solid takes up — essentially,...
A transformation moves or changes a shape's position, size, or orientation — whi...
Symmetry describes when a shape looks exactly the same after being reflected or ...
A vector represents both a magnitude (size) and a direction — unlike a plain num...
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