Discusses the properties and types of triangles, explaining that a triangle is a closed figure with three sides and angles. It categorizes triangles into equilateral, isosceles, scalene, obtuse, right ...

There are 360° in a full turn, 180° in a half turn and 90° in a quarter turn. A quarter turn is called a right angle. A right angle is shown by a small square. This fact can be used to calculate ...

There are 360° in a full turn, 180° in a half turn and 90° in a quarter turn. A quarter turn is called a right angle. A right angle is shown by a small square. This fact can be used to calculate ...