Illustrator - making shapes

I used the shape tools to create my first column of shapes. Just by simply pressing each shape of tool and enlarging the shape to my preferred size and filling all the shapes with the my preferred colour.

Using the pen tool i created these shapes, by either pressing a point on each part of the page and joining them up or creating straight line anchors to create curves for shapes like the circle.

When using the dialogue tool I selected each of the shape tools and changed the inch and width to 50 to create this size, and for the triangle used the polygon tool but changed the amount of sides to 3.