If the sides of a triangle are equal and one base angle is 35°, what is the apex angle?
一个三角形两腰相等，一个底角是35°，它的顶角是多少度．
<gadget id="calculator">35 * 2</gadget>
<output>70</output>

<gadget id="calculator">180 - 70</gadget>
<output>110</output>

<result>110</result>