# 2D


rect() - Rectangle	rect	rectangle.PNG
triangle() - Triangle	triangle	triangle.PNG
point() - Point	point	point.PNG
line() - Line	line	lline.PNG
ellipse() - Ellipse	ellipse	ellipse.PNG
circle() - Circle	circle	circle.PNG
arc() - Arc	arc	arc.PNG
quad() - Quadrilateral	quad	quad.PNG
beginShape() - General Polygon		beginShape.PNG

## How are 2D Shapes drawn? In 2D mode, shapes are defined by a sequence of **vertices** that are then **connected into edges** to form a **closed region**.

The region can be filled with any color using [fill()](https://learnpython.strivemath.com/p5-python-web/reference/colour-and-outline/fill), and the edges can be colored using [stroke()](https://learnpython.strivemath.com/p5-python-web/reference/colour-and-outline/stroke). ### Shortcut to common shapes Some shapes have a **known configuration of vertices** (for example, we all know what the vertices of a square look like), and this gives us an **advantage to use other simpler information** (like the center of the square, and the length of its sides), and from that, we can calculate all the other vertices. Shapes like [circle()](https://learnpython.strivemath.com/p5-python-web/reference/shapes/2d/circle), [ellipse()](https://learnpython.strivemath.com/p5-python-web/reference/shapes/2d/ellipse), [arc()](https://learnpython.strivemath.com/p5-python-web/reference/shapes/2d/arc), [square()](https://learnpython.strivemath.com/p5-python-web/reference/shapes/2d/square), [rect()](https://learnpython.strivemath.com/p5-python-web/reference/shapes/2d/rect) offer that shortcut. You can always resort to using [beginShape()](https://learnpython.strivemath.com/p5-python-web/reference/shapes/2d/beginshape), [triangle()](https://learnpython.strivemath.com/p5-python-web/reference/shapes/2d/triangle), or [quad()](https://learnpython.strivemath.com/p5-python-web/reference/shapes/2d/quad). #### Vertices

``` quad(x1, y1, x2, y2, x3, y3, x4, y4) ``` #### Shortcut

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