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Equilateral Triangle Formulas Revision

Click the option on the left followed by your answer on the right

1

Altitude

$$\frac{\sqrt{3}}{2}a$$

2

Area

$$\frac{\sqrt{3}}{4}a^2$$

3

Inradius

$$\frac{a}{(2\sqrt{3})}$$

4

Circumradius

$$\frac{a}{\sqrt{3}}$$

5

Exradius

$$\frac{\sqrt{3}}{2}a$$

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Revise Other Quant Formulas
Properties of Triangle Two points Polygons Coordinate Geometry Right Angled Triangle Triangles Total Surface Area Volumes of Solids Areas Lateral/Curved Surface Area Hexagon