You can split a rectangle into 2 right-angled triangles. Image caption, STEP 2: Use the compass to draw a circle. Put a dot where the compass rested and use the ruler to draw a horizontal line ...

An equilateral triangle has 3 sides of equal length. The dashes on the lines show they are equal in length. All of the angles are also equal. A right-angled triangle is a triangle that has a right ...

Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles ... deck and rigging rope form a right triangle. If we know how far the rope is ...

At school we are told that the shape of a right-angled triangle depends upon the other two angles. The angle is related to the circumference of a circle, which is divided into 360 parts or degrees.

The mathematical study of triangles has just got a whole lot ... and 1 (representing lines at right angles). Wildberger says it would be possible to make a new protractor that measures spread ...

which states that "in a right-angled triangle the square of the hypotenuse is equal [to the sum of] the squares of the two other sides." Contrary to what generations of pupils have learned in high ...