div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: Cuadrilateros src=https:reader035fdocumentscoreader035viewer202208100455c212b2bb61ebcf498b4645html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divpPrimero en el cuadrilátero:p p60 +40 + 2β + 2∝ = 360p p100 + 2β + 2∝ =360p p2β + 2∝ = 360 -100p p2β + 2∝= 260p pβ + ∝= 2602p pβ + ∝ = 130p pLuego en el triangulop pβ + ∝ + x = 180p p130 +x = 180p pX = 180 -130p pX=50pdiv