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Geometry: Difference between revisions
→Area of a triangle: equilateral triangle
→Area and perimeters: add triangle |
→Area of a triangle: equilateral triangle |
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| Line 18: | Line 18: | ||
<math>A = \frac{1}{2} bh</math> | <math>A = \frac{1}{2} bh</math> | ||
* The area of an equilateral triangle is | |||
<math>A = \frac{1}{4}s^2\sqrt{3}</math> | |||
= Volume and surface area = | = Volume and surface area = | ||