You'll like draw a perfect square or rectangle by drawing congruent angles to form the box, and then congruent triangles (equilateral ... except that the bisecting ray will construct congruent ...

The trigonometric ratios for the angles 30°, 45° and 60° can be calculated using two special triangles. An equilateral triangle with side lengths of 2 cm can be used to find exact values for ...

The trigonometric ratios for the angles 30°, 45° and 60° can be calculated using two special triangles. An equilateral triangle with side lengths of 2 cm can be used to calculate accurate ...