\oval (LaTeX2e unofficial reference manual (November 2018))

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#### 8.19.10 `\oval`

Synopsis:

    \oval(width,height)
    \oval(width,height)[portion]

Produce a rectangle with rounded corners. The optional argument portion allows you to produce only half or a quarter of the oval. For half an oval take portion to be one of these.

`t`

  top half

`b`

  bottom half

`r`

  right half

`l`

  left half

Produce only one quarter of the oval by setting portion to `tr`, `br`, `bl`, or `tl`.

This draws the top half of an oval that is 3 wide and 7 tall.

    \put(5,7){\oval(3,7)[t]}

The (5,7) is the center of the entire oval, not just the center of the top half.

These shapes are not ellipses. They are rectangles whose corners are made with quarter circles. These circles have a maximum radius of 20pt (see \circle for the sizes). Thus large ovals are just boxes with a small amount of corner rounding.

Unofficial LaTeX2e reference manual