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  1. Ext (X) + Int = 180degree (angles on a straight line) X + (... regular polygon is a: 360 degree divided by 36 / 7 (sum of ext . angles of a polygon is 360 degrees) = 360 x 7/36 = 70

  2. 1. sum of ext . angle of a regular 35-polygon = 360度 所以 each ext . angle of a regular 35-polygon = 360...

  3. 1) Ext (X) + Int = 180degree (angles on a straight line) X + (... regular polygon is a: 360 degree divided by 36 / 7 (sum of ext . angles of a polygon is 360 degrees) = 360 x 7/36 = 70...

  4. ... 協 會 合 辦)http://www.hkpl.gov.hk/tc_chi/ ext _act/ ext _act_lac/ ext _act_lac_cswcs/ ext _act_lac_cswcs_detail.html 2...

  5. (a) ∠A+∠B=∠ACD ( ext ∠ of trangle)// (b) 180-150=∠ACD (adj ∠ on st.line) ∠ACD=30...

  6. ... ,OP, OR, OA, ∠QOC = ∠ROC(tan. from ext . pt.) ∠QOB = ∠POB(tan. from ext . pt.) ∴∠QOC...

  7. ...%B3%BD&orig_url=http://www.hkpl.gov.hk/tc_chi/ ext _act/ ext _act_lac/ ext _act_lac_cswcs/ ext _act_lac_cswcs06.html&current_...

  8. ... ParkKiu Tsui ParkPlover Cove Park( Ext .) 2007-12-05 18:50:27 補充: Shek O ParkPok Fu...

  9. ...比賽 (截止參賽日期﹕2010年3月19日) http://www.hkpl.gov.hk/tc_chi/ ext _act/ ext _act_hklf/ ext _act_hklf6/files/8HKLF_Competition...

  10. ...比賽」 - 「香港是我家」( 26/1/07 截止) http://www.hkpl.gov.hk/tc_chi/ ext _act/ ext _act_ra/ ext _act_ra_wbd/423wbd07.html 3 新地開心閱讀計劃 http://www.shkpbookclub...