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/ All


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See Geometry teacher and course rating Brian McCall

Geometry Building Blocks

Geometry building blocks reviews elementary concepts on the subject, including the definition of terms related to shapes like lines, angles, triangles, polygons, and circles. Topics include: 33 videos 1h 26m 38s

Reasoning, Diagonals, Angles and Parallel Lines

Reasoning, diagonals, angles and parallel lines covers applications of both inductive and deductive reasoning to geometry, as well as the definitions on angles and parallel lines. Topics include: 30 videos 52m 11s


Constructions covers elementary methods related to perpendicularity, parallelism, bisectors, angles, polygons, circles and centers of a triangle. Topics include: 38 videos 1h 38m 47s


Triangles covers basic definitions and theorems, including the relationships between sides and angles, as well as the properties of isosceles triangles. Topics include: 45 videos 1h 39m 58s


Polygons covers terms and formulas related to common polygon shapes, specially those of quadrilaterals such as: squares, rectangles, trapezoid, rhombus, parallelograms. Topics include: 38 videos 1h 25m 43s


Circles covers terms and formulas, including central and inscribed angles, and the relationships between tangents, arcs, secants, chords and circumference. Topics include: 45 videos 1h 38m 15s


Transformations covers the practice of geometric transformations, involving reflections, rotations and translations, among others. Topics include: 28 videos 1h 28m 10s


Area covers formulas related to common shapes, such as triangles, quadrilaterals, polygons, circles, and the surfaces of some 3D shapes. Topics include: 61 videos 2h 31m 14s


Pythagorean theorem covers proofs, formulas and applications related to this often used theorem. Topics include: 42 videos 1h 58m 53s


Volume covers terms and formulas related to 3D shapes, particularly those of prisms and cylinders. Topics include: 28 videos 1h 24m 9s


Similarity covers how to solve basic proportions, the properties of similarity, similarity shortcuts and the how to use area and volume ratios to find missing information. Topics include: 35 videos 1h 20m 46s

Basic Trigonometry

Basic trigonometry covers the definitions and formulas for the basic trigonometric ratios, as well as the fundamental theorems and some applications Topics include: 24 videos 50m 57s