Analyze Math
Analyze Math: Area of Triangles
The geometry resource explores the different formulas used to calculate the area of triangles. The applet investigates the angles and sides of a triangle.
CK-12 Foundation
Ck 12: Trigonometry: Introduction to the Triangle Area Formula
[Free Registration/Login may be required to access all resource tools.] This lesson covers how to find the area of a triangle using sine.
Cuemath
Cuemath: Heron's Formula and Quadrilaterals
A comprehensive guide for learning all about Heron's Formula and quadrilaterals with numerous solved examples.
Math Open Reference
Math Open Reference: Heron's Formula
Learn about corresponding angles with this resource which offers detailed explanations, examples, and interactives. Subjests covered include the area of a triangle. Links to related topics.
Cuemath
Cuemath: Cosine Law
A comprehensive guide for learning all about the law of cosine with definitions, what is the law, and solved examples.
Math Open Reference
Math Open Reference: Area of an Equilateral Triangle
Learn about the area of an equilateral triangle with this helpful reference tool. Provides a detailed definition, examples, and an internet activity that enhances further explanation. Includes links to related topics.
Other
Math Pages: Heron's Formula and Brahmagupta's Generalization
This resource provides detailed information and pertinent graphs dealing with Heron's Formula and Brahmagupta's Generalization. Useful for any student who is studying these two concepts.
Math Open Reference
Math Open Reference: Heron
Learn about the life and mathematical discoveries of Greek mathematician, Heron.
Mocomi & Anibrain Digital Technologies
Mocomi: What Is Heron's Formula?
Define's Heron's Formula and provides examples for how to use the formula to calculate the area of a triangle.
Wolfram Research
Wolfram Science World: Heron of Alexandria (Ca. 75 Ad)
Greek mathematician who was mainly interested in practical studies of mechanics and engineering. He dealt with a number of such problems in his work Dioptra. He is best known today for Proposition 1.8 of his Metrica, which is now known...