src/Malenki/Math/Unit/Angle.php
public function isSupplementary(Angle $angle)
    {
        $out = new self($this->float_rad + $angle->rad);

        return $out->isStraight();
    }
public function isSupplementary(Angle $angle)
    {
        $out = new self($this->float_rad + $angle->rad);

        return $out->isStraight();
    }
Test if current angle is supplementary with another.

@param  Angle   $angle
@access public
@return boolean