Plane Figures and Their Properties

This lesson covers the identification and properties of various plane figures such as squares, rectangles, triangles, and circles. It explains how to calculate the area and perimeter of these shapes. The lesson also includes the classification of triangles their sides.

• 13:22 “An assembly area is in the shape of a 30 meters by 30 meters square. Part of the area is a concrete rectangle, 25 meters by 5 meters. The rest is grass. Calculate the area of the grass. This is a little tricky, but I bel...”
• 09:20 “They are four interior angles equal 90 degrees and opposite sides are parallel to each other. Differences include, for a square, all sides are of equal length, only the opposite sides are of equal length for a rectangle....”
• 11:42 “So we just impute, substitute our values into the equation. Therefore, 80 is into bracket 2. It is equal to 2 bracket length plus breadth, which is 18. To solve that, we divide both sides by 2 to eliminate 2 on the other...”