Question: what is the sum of the interior angles of an icosagon
[{'answer': '3240 degrees', 'provenance': [{'wikipedia_id': '445032', 'title': 'Icosagon', 'start_paragraph_id': 1, 'start_character': 107, 'end_paragraph_id': 1, 'end_character': 119, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '445032', 'title': 'Icosagon', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 119, 'bleu_score': 0.7608566262731651, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11089360203372464973}, 'section': 'Section::::Abstract.'}]}]