Shapes
You definitely know how to find the area of a rectangle, right? Just do Length(Width). Squares are even easier. Just find the length of one side, then square it. Triangles are like rectangles, but just think of them as half a rectangle. So, area of a triangle would be, Length(Width).
All shapes's angles add up to different amount of degrees. The triangle, the shape with the least sides, has angles measurements adding up to 180 degrees. The rectangle's and the square's angles add up to 360 degrees. The pentagon has 540, hexagon has 720, septa(hepta)gon has 900, and so on...
The way to find the measurements of all of the angles added up in a shape is to call 'n' the amount of sides in the shape, so for a hexagon, n would be 6 because a hexagon has 6 sides. To find the angles added up, you do (n-2)180. The reason you subtract by 2 is because there is no shape with only 2 sides. As I said, the shape with the fewest number of sides is a triangle.
So what if I asked you the measurement of one angle of a regular octagon? The first thing you need to know is that regular means that all sides and all angles in that shape are equal. That means that the octagon has 8 equal sides with 8 equal angles. And the sum of all of those angles is (8-2)180. After we do that, we must divide by 8 because we want to find the measurement of each individual angle. 6(180) = 1080. 1080/8 = 135 degrees each. Each angle of an octagon is 235 degrees each!
All shapes's angles add up to different amount of degrees. The triangle, the shape with the least sides, has angles measurements adding up to 180 degrees. The rectangle's and the square's angles add up to 360 degrees. The pentagon has 540, hexagon has 720, septa(hepta)gon has 900, and so on...
The way to find the measurements of all of the angles added up in a shape is to call 'n' the amount of sides in the shape, so for a hexagon, n would be 6 because a hexagon has 6 sides. To find the angles added up, you do (n-2)180. The reason you subtract by 2 is because there is no shape with only 2 sides. As I said, the shape with the fewest number of sides is a triangle.
So what if I asked you the measurement of one angle of a regular octagon? The first thing you need to know is that regular means that all sides and all angles in that shape are equal. That means that the octagon has 8 equal sides with 8 equal angles. And the sum of all of those angles is (8-2)180. After we do that, we must divide by 8 because we want to find the measurement of each individual angle. 6(180) = 1080. 1080/8 = 135 degrees each. Each angle of an octagon is 235 degrees each!