Make a mark at \(60^\circ\). Remove the protractor and join Q to the \(60^\circ\) mark. Label this point P. If necessary, mark the angle. There are \(360^\circ\) in a complete turn. There are ...

To find a periodic trajectory in an acute triangle, draw a perpendicular line from each vertex to the opposite side, as seen to the left, below. Join the points where the right angles occur to form a ...

Another idea for consideration: Triangles have 3 angles (who would have guessed?); however, I would postulate that how you describe a triangle, by way of said angles, would generate different ...

Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles. Trigonometry is found all throughout geometry, as every straight-sided shape may be ...

This is a completely different form of trigonometry that does not need the familiar modern concept of angles. At school we are told that the shape of a right-angled triangle depends upon the other ...