MathDB
Isosceles Triangles

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November 26, 2009

Problem Statement

Two angles of an isosceles triangle measure 70∘ 70^\circ and x∘ x^\circ. What is the sum of the three possible values of x x? <spanclass=′latex−bold′>(A)</span> 95<spanclass=′latex−bold′>(B)</span> 125<spanclass=′latex−bold′>(C)</span> 140<spanclass=′latex−bold′>(D)</span> 165<spanclass=′latex−bold′>(E)</span> 180 <span class='latex-bold'>(A)</span>\ 95 \qquad <span class='latex-bold'>(B)</span>\ 125 \qquad <span class='latex-bold'>(C)</span>\ 140 \qquad <span class='latex-bold'>(D)</span>\ 165 \qquad <span class='latex-bold'>(E)</span>\ 180
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