1)In the figure, ABCDEFGHIJ is a regular decagon.If we extend AB and DC such that they meet at a point P, find < BPQ
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1題F.2maths;( 20點急
2013-03-17 11:14 pm
回答 (2)
2013-03-18 12:27 am
✔ 最佳答案
你係咪想講<BPC呢個角?咁就<PBC=360/10=36度 (外角)
<PCB一樣
<BPC+36+36=180
<BPC=180-72
<BPC =108
2013-03-18 12:03 am
"find < BPQ"
ABCDEFGHIJ is a regular decagon.If we extend AB and DC such that they meet at a point P....邊度係角Q?
2013-03-17 16:23:14 補充：
如果係
2013-03-17 16:24:07 補充：
總內角和 = (10-2)x180 = 1440°
ABCDEFGHIJ is a regular decagon.If we extend AB and DC such that they meet at a point P....邊度係角Q?
2013-03-17 16:23:14 補充：
如果係
2013-03-17 16:24:07 補充：
總內角和 = (10-2)x180 = 1440°
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