The vertex angle of an isosceles triangle is 36°, how many degrees is each base angle of this iron plate?
一个等腰三角形的铁板顶角是36°，这块铁板的每个底角是多少度？
<gadget id="calculator">180 - 36</gadget>
<output>144</output>

<gadget id="calculator">144 / 2</gadget>
<output>72</output>

<result>72</result>