tolong dijawab beserta cara yang lengkap, terimakasih

<p>1. &lt;AOB = &lt;COD &nbsp; (sudut saling bertolak belakang)</p><p>&nbsp; &nbsp; 3m + 83° = 12m + 2°</p><p>&nbsp; &nbsp; 12m - 3m = 83 - 2</p><p>&nbsp; &nbsp; 9m = 81°</p><p>&nbsp; &nbsp; m = 9°</p><p>&nbsp; &nbsp; &lt;AOB = 3m + 83°</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 3(9) + 83</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 27° + 83°</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 110°</p><p>&nbsp; &nbsp; &nbsp;&lt;AOD = 180° - &lt;AOB</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 180° - 110°</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=<strong> 70°</strong></p><p>&nbsp; &nbsp; &nbsp;Jawaban : B</p><p>&nbsp;</p><p>2. &lt;AOD = &lt;COB</p><p>&nbsp; &nbsp; &nbsp;&lt;AOD = &lt;COE + &lt;BOE</p><p>&nbsp; &nbsp; &nbsp;10n = 3n + 19° + 4n + 7°</p><p>&nbsp; &nbsp; &nbsp;10n = 7n + 26°</p><p>&nbsp; &nbsp; &nbsp;10n - 7n = 26°</p><p>&nbsp; &nbsp; &nbsp;3n = 26°</p><p>&nbsp; &nbsp; &nbsp;n = 26/3 = 8,67°</p><p>&nbsp; &nbsp; &nbsp;&lt;DOB = 180° - 10n</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 180° - 10(8,67)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 180° - 86,7</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 93,3°</p><p>&nbsp; &nbsp; &nbsp;&lt;BOE = 4n + 7</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 4(8,67) + 7</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 34,68 + 7</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 41,68°</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 41,7°</p><p>&nbsp; &nbsp; &nbsp; &lt;DOE = &lt;DOB + &lt;BOE</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 93,3° + 41,7°</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= <strong>135°</strong></p><p>&nbsp; &nbsp; &nbsp; Jawaban : D</p><p>&nbsp;</p><p>3. &lt;AOC = &lt;BOD &nbsp; &nbsp; (saling bertolakbelakang)</p><p>&nbsp; &nbsp; &nbsp;3m + 26° = 6m + 2°</p><p>&nbsp; &nbsp; &nbsp;6m - 3m = 26° - 2°</p><p>&nbsp; &nbsp; &nbsp;3m = 24°</p><p>&nbsp; &nbsp; &nbsp;m = 8°</p><p>&nbsp; &nbsp; &nbsp;&lt;BOD + &lt;BOF + &lt;FOC = 180°</p><p>&nbsp; &nbsp; &nbsp;(6m + 2°) + (2n + 14°) + (n + 47°) = 180°</p><p>&nbsp; &nbsp; &nbsp;(6(8°) + 2°) + (2n + 14°) + (n + 47°) = 180°</p><p>&nbsp; &nbsp; &nbsp;48° + 2° + 2n + 14° + n + 47° = 180°</p><p>&nbsp; &nbsp; &nbsp;3n + 111° = 180°</p><p>&nbsp; &nbsp; &nbsp;3n = 180° - 111°</p><p>&nbsp; &nbsp; &nbsp;3n = 69°</p><p>&nbsp; &nbsp; &nbsp;n = 23°</p><p>&nbsp;</p><p>&nbsp; &nbsp; &lt;EOF = &lt;BOE + &lt;BOF</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 90° + 2(23°) + 14°</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 90° &nbsp;+ 46° + 14°</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= <strong>150°</strong></p><p>&nbsp; &nbsp; Jawaban : C</p>