On considère la figure ci-dessous :
{"init": {"range": [[-4.744995240966764, 4.744995240966764], [-6.401008384989826, 4.28954897963658]], "scale": [50, 50]}, "line": [[[1.7067843960784022, -2.4671617347274344], [-2.275712528104536, 3.2895489796365793], {"subtype": "segment", "stroke": "grey"}], [[3.7449952409667646, -0.14032759837731001], [-3.7449952409667646, 0.14032759837731001], {"subtype": "segment", "stroke": "grey"}], [[0.08850527775122526, -5.401008384989826], [0.0, 0.0], {"subtype": "segment", "stroke": "grey"}], [[1.4780383748456793, 3.1365650467758917], [0.0, 0.0], {"subtype": "segment", "stroke": "grey"}], [[2.098868362221851, 2.239153521251582], [-3.236724626274119, -0.5943790314332922], {"subtype": "segment", "stroke": "grey"}], [[1.606784396078402, -2.4671617347274344], [1.8067843960784022, -2.4671617347274344], {"stroke": "darkslategrey"}], [[1.7067843960784022, -2.5671617347274345], [1.7067843960784022, -2.3671617347274343], {"stroke": "darkslategrey"}], [[-2.375712528104536, 3.2895489796365793], [-2.175712528104536, 3.2895489796365793], {"stroke": "darkslategrey"}], [[-2.275712528104536, 3.1895489796365792], [-2.275712528104536, 3.3895489796365794], {"stroke": "darkslategrey"}], [[-0.668928132026134, 0.8223872449091448], [-0.46892813202613404, 0.8223872449091448], {"stroke": "blue"}], [[-0.568928132026134, 0.7223872449091449], [-0.568928132026134, 0.9223872449091448], {"stroke": "blue"}], [[3.6449952409667645, -0.14032759837731001], [3.8449952409667647, -0.14032759837731001], {"stroke": "darkslategrey"}], [[3.7449952409667646, -0.24032759837731002], [3.7449952409667646, -0.04032759837731001], {"stroke": "darkslategrey"}], [[-3.8449952409667647, 0.14032759837731001], [-3.6449952409667645, 0.14032759837731001], {"stroke": "darkslategrey"}], [[-3.7449952409667646, 0.04032759837731001], [-3.7449952409667646, 0.24032759837731002], {"stroke": "darkslategrey"}], [[-0.01149472224877475, -5.401008384989826], [0.18850527775122528, -5.401008384989826], {"stroke": "darkslategrey"}], [[0.08850527775122526, -5.5010083849898255], [0.08850527775122526, -5.301008384989826], {"stroke": "darkslategrey"}], [[1.3780383748456793, 3.1365650467758917], [1.5780383748456794, 3.1365650467758917], {"stroke": "darkslategrey"}], [[1.4780383748456793, 3.0365650467758916], [1.4780383748456793, 3.2365650467758917], {"stroke": "darkslategrey"}], [[1.998868362221851, 2.239153521251582], [2.1988683622218512, 2.239153521251582], {"stroke": "darkslategrey"}], [[2.098868362221851, 2.1391535212515818], [2.098868362221851, 2.339153521251582], {"stroke": "darkslategrey"}], [[-3.336724626274119, -0.5943790314332922], [-3.136724626274119, -0.5943790314332922], {"stroke": "darkslategrey"}], [[-3.236724626274119, -0.6943790314332922], [-3.236724626274119, -0.4943790314332922], {"stroke": "darkslategrey"}], [[-2.0779387539950602, 0.07411475241658366], [-1.8779387539950603, 0.07411475241658366], {"stroke": "orange"}], [[-1.9779387539950604, -0.025885247583416343], [-1.9779387539950604, 0.17411475241658367], {"stroke": "orange"}], [[0.6067803093340804, 1.499867968068278], [0.8067803093340804, 1.499867968068278], {"stroke": "green"}], [[0.7067803093340804, 1.399867968068278], [0.7067803093340804, 1.5998679680682781], {"stroke": "green"}], [[-0.1, 0.0], [0.1, 0.0], {"stroke": "red"}], [[0.0, -0.1], [0.0, 0.1], {"stroke": "red"}]], "label": [[[1.7067843960784022, -2.4671617347274344], "A", "below right", {"color": "darkslategrey"}], [[-2.275712528104536, 3.2895489796365793], "B", "above left", {"color": "darkslategrey"}], [[-0.568928132026134, 0.8223872449091448], "C", "above left", {"color": "blue"}], [[3.7449952409667646, -0.14032759837731001], "E", "right", {"color": "darkslategrey"}], [[-3.7449952409667646, 0.14032759837731001], "F", "left", {"color": "darkslategrey"}], [[0.08850527775122526, -5.401008384989826], "G", "below", {"color": "darkslategrey"}], [[1.4780383748456793, 3.1365650467758917], "H", "above right", {"color": "darkslategrey"}], [[2.098868362221851, 2.239153521251582], "I", "above right", {"color": "darkslategrey"}], [[-3.236724626274119, -0.5943790314332922], "J", "below left", {"color": "darkslategrey"}], [[-1.9779387539950604, 0.07411475241658366], "K", "left", {"color": "orange"}], [[0.7067803093340804, 1.499867968068278], "L", "above right", {"color": "green"}], [[0.0, 0.0], "O", "below right", {"color": "red"}]]}
Donner, si possible, le nom de l'angle opposé par le sommet à l'angle \(\widehat{IKO}\).