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Point, Tangent to a Curve Example

Creating two lines from PT1 tangent to a previously defined circle.

LN1 is defined using PT2 to specify to which side of the circle it should be tangent.

LN2 is defined using a the minor word RIGHT.

$$
$$ Declaration
$$
    ENTITY/PT1,PT2,CR1,LN1,LN2
$$
$$ Point Definition
$$
    PT1=POINT/-1,0
    PT2=POINT/1,1
    CR1=CIRCLE/1,0,.5
$$
$$ Line Definition
$$
    LN1=LINE/PT1,PT2,TANTO,CR1
    LN2=LINE/PT1,RIGHT,TANTO,CR1

Line through a Point and Tangent to a Curve