Learn about Two Dimensional Figures In this lesson, let’s learn how to name Two Dimensional Figures. We have to name each of the shapes. Two Dimensional Figures take up a certain amount of area, but they do not take up any space because they are flat and we can draw them. So let’s look at the characteristics of each of these shapes. So this one has no sharp edges and no corners, this is a Circle. It’s basically a round shape which has only one edge which runs along but it’s not a sharp edge. Let’s look at the second one. What do we see here? Well we got four sides, side one, side two, side three and side four. I’m going to label them as S1, S2, S3 and S4. So we see four sides. 2 and 1, side 1 and side 2 are equal and they are parallel to each other. Side 3 and 4 are also equal and parallel to each other. All the angles are exactly the same size. Such a figure is called a Rectangle. A rectangle has two sides and two sides that are equal and parallel to each other so, the opposite sides are equal and parallel and all the angles are off the same size. That’s a rectangle. The third figure that we see looks like a rectangle. I’ve got all sides that are equal. All sides and all angles are equal. This is called square. A square is a rectangle as well. A square is also a rectangle because a rectangle has all angles that are the same which are true here. Sides are equal and parallel. This is equal to this, this is equal to this. But instead of a rectangle, a square has all sides that are equal and rectangle only the opposites are equal. So a square is a rectangle as well. But this figure is called a Square. Let’s look at the fourth one. Here what we see is we’ve got three side and we got three angles. Anything that has three sides and three angles, it’s called a Tri which is three angle. Triangles have three sides and three angles, one, two, three sides, one, two, three angles.