Geometry Vocabulary: Why It Matters
Geometry is the study of shapes, sizes, positions, and dimensions — from triangles and circles to 3D solids and coordinate systems. Geometry vocabulary is the language of space and structure, underlying architecture, engineering, art, and every GPS calculation.
Topics Covered
Triangles and Polygons
Triangle types, angle sums, polygon names, and the Pythagorean theorem.
Circles
Radius, diameter, circumference, area, and parts of a circle.
Area and Volume
Formulas for 2D areas and 3D volumes — rectangles, circles, boxes, and more.
Transformations
Reflection, rotation, translation, and dilation — the four rigid and non-rigid motions.