Why is a rectangle considered a convex quadrilateral?

A rectangle is a type of quadrilateral that possesses certain properties which qualify it as a convex shape. To understand why a rectangle is a convex quadrilateral, we first need to clarify what these terms mean. A quadrilateral is a polygon with four sides. Convex quadrilaterals, specifically, are those where all interior angles are less … Read more

What are some effective methods to add and subtract integers without using a number line?

Adding and subtracting integers can be accomplished easily without a number line by using mental math strategies, understanding the rules of signs, and employing visual aids or manipulatives. Here’s a breakdown of some effective methods: Addition of Integers 1. **Same Signs**: When adding two integers with the same sign, simply add their absolute values and … Read more

What exactly is a three-dimensional shape?

A three-dimensional shape, often referred to as a 3D shape, is a form that has depth, width, and height, distinguishing it from two-dimensional shapes that have only length and width. These shapes occupy space and can be found all around us, from everyday objects to complex architectural designs. In geometry, three-dimensional shapes can be classified … Read more