Trigonometry close trigonometryThe study of sides and angles in triangles. can be used to find a missing angle in a right-angled triangle when two sides are known. An understanding of the three ...

A right triangle is a special type of triangle that has one angle measuring 90 degrees. In this article, we will look at how to calculate the other two angles of a right triangle using trigonometry ...

This takes students through six matching activities, three on finding sides and three on finding angles. Designed to create discussion and to be used as a starter/plenary but use how you wish. You'll ...

The humble triangle has been with us from the ancient pyramids to the modern days, being one of the most recognizable, interesting, and useful shapes in geometry. Ancient mathematicians laid the ...

to build on students' knowledge of triangle and develop students' reasoning with properties of different classes of triangles to develop students' language related to different triangles to engage ...

Well, what is the best way to cut a sandwich in half? Surely triangles don't really have "more sandwich," right? That's geometry and the law of conservation of matter. But something about the ...