Dans la figure suivante, quelle est la mesure de l'angle \(\widehat{AOB}\) ?
On donnera la réponse suivie de l'unité qui convient.
{"init": {"range": [[-3.390058662531212, 4.120000000000001], [-1.5264944614326272, 3.2]], "scale": [100, 100]}, "label": [[[-1.9917155521093433, 1.6712477851850027], "A", "below left", {}], [[0.0, 0.0], "O", "below-right", {}], [[2.6000000000000005, 0.0], "B", "below", {}], [[1.6099999999999999, 0.0], "0", "center", {}], [[1.5129051194653125, 0.5506524307543266], "20", "center", {}], [[1.2333315534215545, 1.0348880515953283], "40", "center", {}], [[0.8049999999999999, 1.394300900092946], "60", "center", {}], [[0.2795735660437578, 1.5855404823496548], "80", "center", {}], [[-0.2795735660437578, 1.5855404823496548], "100", "center", {}], [[-0.8049999999999999, 1.394300900092946], "120", "center", {}], [[-1.2333315534215545, 1.0348880515953283], "140", "center", {}], [[-1.5129051194653125, 0.5506524307543266], "160", "center", {}], [[-1.6099999999999999, 5.714936956411375e-101], "180", "center", {}], [[1.9580000000000002, 0.0], "180", "center", {}], [[1.8399181514988088, 0.6696754406316594], "160", "center", {}], [[1.499915019626959, 1.258578139766244], "140", "center", {}], [[0.9790000000000001, 1.695677740609931], "120", "center", {}], [[0.34000313187184966, 1.9282535803979035], "100", "center", {}], [[-0.34000313187184966, 1.9282535803979035], "80", "center", {}], [[-0.9790000000000001, 1.695677740609931], "60", "center", {}], [[-1.499915019626959, 1.258578139766244], "40", "center", {}], [[-1.8399181514988088, 0.6696754406316594], "20", "center", {}], [[-1.9580000000000002, 5.714936956411375e-101], "0", "center", {}], [[0.0, 1.8], "90", "center", {}]], "arc": [[[0.0, 0.0], [1.4, 1.4], 0.0, 180.0, false, {}], [[0.0, 0.0], [2.2, 2.2], 346.15384615384613, 193.84615384615384, false, {}], [[0.0, 0.0], [0.4333333333333334, 0.4333333333333334], 0.0, 140.0, false, {"stroke": "red"}]], "line": [[[-1.4, 0.0], [1.4, 0.0], {"subtype": "segment"}], [[-2.1360719983373144, -0.5264944614326271], [2.1360719983373144, -0.5264944614326271], {"subtype": "segment"}], [[1.4, 0.0], [1.47, 0.0], {"subtype": "segment"}], [[2.2, 0.0], [2.112, 0.0], {"subtype": "segment"}], [[1.3787308542170913, 0.24310744873370246], [1.4476673969279459, 0.2552628211703876], {"subtype": "segment"}], [[2.166577056626858, 0.3820259908672468], [2.0799139743617836, 0.3667449512325569], {"subtype": "segment"}], [[1.3155696691002716, 0.4788282006559362], [1.3813481525552853, 0.502769610688733], {"subtype": "segment"}], [[2.0673237657289985, 0.7524443153164713], [1.9846308150998386, 0.7223465427038124], {"subtype": "segment"}], [[1.212435565298214, 0.7], [1.2730573435631247, 0.735], {"subtype": "segment"}], [[1.905255888325765, 1.1], [1.8290456527927346, 1.056], {"subtype": "segment"}], [[1.0724622203665692, 0.899902653561155], [1.1260853313848977, 0.9448977862392128], {"subtype": "segment"}], [[1.685297774861752, 1.4141327413103866], [1.6178858638672817, 1.3575674316579711], {"subtype": "segment"}], [[0.899902653561155, 1.0724622203665692], [0.9448977862392128, 1.1260853313848977], {"subtype": "segment"}], [[1.4141327413103866, 1.685297774861752], [1.3575674316579711, 1.6178858638672817], {"subtype": "segment"}], [[0.7, 1.212435565298214], [0.735, 1.2730573435631247], {"subtype": "segment"}], [[1.1, 1.905255888325765], [1.056, 1.8290456527927346], {"subtype": "segment"}], [[0.4788282006559362, 1.3155696691002716], [0.502769610688733, 1.3813481525552853], {"subtype": "segment"}], [[0.7524443153164713, 2.0673237657289985], [0.7223465427038124, 1.9846308150998386], {"subtype": "segment"}], [[0.24310744873370246, 1.3787308542170913], [0.2552628211703876, 1.4476673969279459], {"subtype": "segment"}], [[0.3820259908672468, 2.166577056626858], [0.3667449512325569, 2.0799139743617836], {"subtype": "segment"}], [[-4.464794497196387e-103, 1.4], [-4.464794497196387e-103, 1.47], {"subtype": "segment"}], [[-8.929588994392773e-103, 2.2], [-8.929588994392773e-103, 2.112], {"subtype": "segment"}], [[-0.24310744873370246, 1.3787308542170913], [-0.2552628211703876, 1.4476673969279459], {"subtype": "segment"}], [[-0.3820259908672468, 2.166577056626858], [-0.3667449512325569, 2.0799139743617836], {"subtype": "segment"}], [[-0.4788282006559362, 1.3155696691002716], [-0.502769610688733, 1.3813481525552853], {"subtype": "segment"}], [[-0.7524443153164713, 2.0673237657289985], [-0.7223465427038124, 1.9846308150998386], {"subtype": "segment"}], [[-0.7, 1.212435565298214], [-0.735, 1.2730573435631247], {"subtype": "segment"}], [[-1.1, 1.905255888325765], [-1.056, 1.8290456527927346], {"subtype": "segment"}], [[-0.899902653561155, 1.0724622203665692], [-0.9448977862392128, 1.1260853313848977], {"subtype": "segment"}], [[-1.4141327413103866, 1.685297774861752], [-1.3575674316579711, 1.6178858638672817], {"subtype": "segment"}], [[-1.0724622203665692, 0.899902653561155], [-1.1260853313848977, 0.9448977862392128], {"subtype": "segment"}], [[-1.685297774861752, 1.4141327413103866], [-1.6178858638672817, 1.3575674316579711], {"subtype": "segment"}], [[-1.212435565298214, 0.7], [-1.2730573435631247, 0.735], {"subtype": "segment"}], [[-1.905255888325765, 1.1], [-1.8290456527927346, 1.056], {"subtype": "segment"}], [[-1.3155696691002716, 0.4788282006559362], [-1.3813481525552853, 0.502769610688733], {"subtype": "segment"}], [[-2.0673237657289985, 0.7524443153164713], [-1.9846308150998386, 0.7223465427038124], {"subtype": "segment"}], [[-1.3787308542170913, 0.24310744873370246], [-1.4476673969279459, 0.2552628211703876], {"subtype": "segment"}], [[-2.166577056626858, 0.3820259908672468], [-2.0799139743617836, 0.3667449512325569], {"subtype": "segment"}], [[-1.4, 5.714936956411375e-101], [-1.47, 5.714936956411375e-101], {"subtype": "segment"}], [[-2.2, 5.714936956411375e-101], [-2.112, 5.714936956411375e-101], {"subtype": "segment"}], [[0.0, 1.4], [0.0, 1.68], {"subtype": "segment"}], [[0.0, 2.2], [0.0, 1.9360000000000002], {"subtype": "segment"}], [[0.0, 0.3], [0.0, -0.3], {"subtype": "segment"}], [[0.3, 0.0], [-0.3, 0.0], {"subtype": "segment"}], [[0.0, 0.0], [-2.390058662531212, 2.0054973422220033], {"subtype": "segment", "stroke": "red"}], [[-2.034568059421779, 1.6201781556437376], [-1.9488630447969073, 1.7223174147262679], {"subtype": "segment", "stroke": "red"}], [[0.0, 0.0], [3.1200000000000006, 0.0], {"subtype": "segment", "stroke": "red"}], [[2.6000000000000005, 0.06666666666666667], [2.6000000000000005, -0.06666666666666667], {"subtype": "segment", "stroke": "red"}]]}