tolong bantuanyaa

<ul><li><strong>Dik:&nbsp;</strong></li></ul><p>* &nbsp; &nbsp;∠PQR=110°</p><p>*. &nbsp; ∠QOS=135°</p><ul><li><strong>Dit:</strong></li></ul><p>Besar ∠QOR = ..... ?</p><ul><li><strong>Penyelesaian:</strong>&nbsp;</li></ul><p><strong>Sudut lurus besarnya = 180°</strong></p><p>&nbsp;</p><ul><li>∠ROS:</li></ul><p>∠POR=110°</p><p>∠POQ+∠QOR=110°</p><p><u>∠POQ+∠QOR</u>+∠ROS=180° &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 110°</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +∠ROS=180°</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ∠ROS=180° - 110°</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;∠ROS=70°</p><ul><li>∠QOR=</li></ul><p>∠QOS=135°</p><p>∠QOR + ∠ROS=135°</p><p>∠QOR+70°= 135°</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ∠QOR=135° - 70°</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ∠QOR= 65°</p><p>&nbsp;</p><p><strong>Jadi , besar ∠QOR adalah 65°</strong></p>