Discover the different types of angles and how to make sure you get the biggest slice of pizza. Horizontal and vertical lines Learn how to identify different types of lines, including vertical ...

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 ...

A rectangle has two pairs of equal sides. It has four right angles (90°). The opposite sides are parallel. The diagonals bisect each other. A parallelogram has two pairs of equal sides.