There is an isosceles triangle kite, its base angle is 36°, what is the measure of the top angle?
有一个等腰三角形的风筝，它的底角是36°，顶角的度数是多少？
<gadget id="calculator">36 * 2</gadget>
<output>72</output>

<gadget id="calculator">180 - 72</gadget>
<output>108</output>

<result>108</result>