Similar Shapes
This lesson covers the identification of similar shapes such as triangles, rectangles, squares, cubes, and cuboids. It explains the criteria for similarity, including proportional sides and equal angles. The lesson also includes methods for enlarging figures using scale factors and calculating lengt
- 28:50 “We said that solution. A scalar factor is that of the longest. The longest, the first side given, the first side given is the wall. The longest, remember, over longest of the beak, those sides that are given, and the lon...”
- 12:43 “that goes second, the shortest side. So, you see, the shortest side of the bigger, shortest sides, shortest sides of the small, the smaller one, of the small, now, now, if you look at it very well, you could also go back...”
- 11:03 “It would be, longest sides of first, that the longest sides of the first one, longest sides of the first, that is bigger, over the longest sides of the smaller one, that is one that is smaller of the smaller. So, now, wh...”
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.
- 02:47 “Identifying plane shapes. Properties of a rectangle. The opposite sides are equal and parallel. It has equal angles. Each angle at 90 degrees. For a rectangle, each angle is at 90 degrees. This is 90 degrees, 90, 90, and...”
- 05:38 “Opposite sides are equal just like a rectangle. The opposite sides of a parallelogram are parallel. Opposite angles are also equal. The properties of a trapezium are below. It has one pair of parallel sides. The parallel...”
- 01:53 “Different plane shapes have different attributes, such as the number of sides and corners. A side is a straight line that makes part of the shape, and the corner is where two sides meet. For example, let me give an illus...”