Two identical triangles can be used to form a parallelogram. Given that the area of the assembled parallelogram is 200 square centimeters, what is the area of the original triangle?
用两个完全一样的三角形可以拼成一个平行四边形．已知拼成的平行四边形的面积是200平方厘米，原来一个三角形的面积是多少平方厘米．
<gadget id="calculator">200 / 2</gadget>
<output>100</output>

<result>100</result>