Classifying Triangles

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A helpful scientific calculator that runs in your web browser window.

Trinagles can be classified according to sides and angles

The conventional method of calculating the area of a triangle (half base times altitude) with pointers to other methods and special formula for equilateral triangles

A page with links for properties of circles and different types of polygons. Each link has great visuals with clear markings, definitions, and formulas.

Worksheet to practice classifying triangles as scalene, isosceles, or equilateral.

The worksheets below can be used as part of extra math homework. These geometry worksheets are free and easily printable. They cover typical school work from grade 4 through 8. They include questions on polygons, 3D objects, angles, and calculations of area, volume, etc.

Formulas about sin, cos, tan, csc, sec, and cot

An introduction the the concept of solving a triangle.

Formula and description of the perimeter of a triangle.

Definition and properties of the midsegment of a triangle

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