我有d呀~ http://purpleroom.no-ip.org/discuz/attachments/ ext _gif/12td1_rlx1lrGcGM8L.gif http://purpleroom.no-ip.org/discuz/attachments...
分類：遊戲及休閒 > 其他 - 遊戲及休閒 2007年08月15日
(a) ∠FJE=∠CAJ+∠ACJ( ext . ∠s of Δ) =a+c (b) ∠EFJ=b+d( ext . ∠s of Δ) a...
1a) ∠ADG = ∠GEB ( ext . ∠, cyclic quad.) ∠AFG = ∠GEC ( ext . ∠, cyclic quad.) ∠GEB...
... 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...
first, let every angles be a.b.c.d.e.f.g then.let the ext .angle of b&e=h let ext .angle of g&d =i let 180-c-f = j ext .angle k=a+i...
to remenber that all sum of ext . ∠=360( ext ∠ of polygon) ∴ 43. 52+63+83+97+(180-y)=360 y= 115 44. x+x+x+x+20+x+20+x+20+90=360 3(2x+50)=360 2x+50=120 x=70/2=35 45. 56+56+124+(180-y)=360 416-y=360 y=56 that's it
... = ∠PAC = a (Equal arc, equal ∠ at circum) ∠DQA = a + b ( Ext . ∠ of triangle) ii) Join AB, we have ∠DBA = b (∠s in the same...
25a) ∠CDE = ∠ABC ( Ext . ∠, cyclic quad.) ∠CDE = ∠EFG ( Ext . ∠, cyclic quad.) Hence...
...舉辦免費講座, 可能會認識你日後大學講師 http://www.hkpl.gov.hk/tc_chi/ ext _act/ ext _act_st/ ext _act_st_st/ ext _act_st_st.html 2009-05-22 16:02:51 補充： http...
(a) ∠A+∠B=∠ACD ( ext ∠ of trangle)// (b) 180-150=∠ACD (adj ∠ on st.line) ∠ACD=30...
