How to define and calculate a space diagonal.
How to determine the number of diagonals in a polygon.
How the vocabulary word vertex applies to different objects in Geometry.
How to derive the area formula of a kite based on the rectangle formula; how to calculate the area of a rectangle using diagonal lengths.
How to derive the formula to find the sum of angles in any polygon.
How to determine the number of handshakes possible in a group of a certain number of people.
How to define a polygon, how to distinguish between concave and convex polygons, how to name polygons.
How to define a rhombus and compare it to a square and rectangle.
How to define a rectangle and a square.
How to identify a kite and its special properties.
How to identify all of the special properties of parallelograms and use them to solve problems.