According to the ratio of 1:2, draw the figure after the reduction of the triangle. What is the area of the reduced triangle equal to the original triangle?
按1：2的比画出三角形缩小后的图形．缩小后的三角形面积是原来三角形的多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * (1/2)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>