如圖,∠A=15°,AB=BC=CD=DE=EF,則∠GEF=_.
如圖,∠A=15°,AB=BC=CD=DE=EF,則∠GEF=______.
![](http://hiphotos.baidu.com/zhidao/pic/item/3812b31bb051f819be3ae6cbd9b44aed2e73e710.jpg)
![](http://hiphotos.baidu.com/zhidao/pic/item/3812b31bb051f819be3ae6cbd9b44aed2e73e710.jpg)
數(shù)學(xué)人氣:360 ℃時(shí)間:2020-09-20 22:31:41
優(yōu)質(zhì)解答
∵∠A=15°,AB=BC=CD=DE=EF,∴∠ACB=15°,∴∠CDB=∠CBD=30°,∴∠BCD=180°-(∠CDB+∠CBD)=180°-60°=120°,∵∠ECD=180°-∠BCD-∠ACB=180°-120°-15°=45°,∴∠ECD=∠CED=45°∴∠CDE=180°-45°×2=9...
我來回答
類似推薦
- 已知:如圖,AD∥BC,點(diǎn)E在AD上,EF∥AB交BC于F,EG∥CD交BC于G,∠A=125°,∠D=95°,求∠GEF的度數(shù).
- 如圖,∠A=15°,AB=BC=CD=DE=EF,則∠GEF=_.
- 如圖,直線AB∥CD,EF⊥CD,F(xiàn)為垂足.如果∠GEF=20°,那么∠1的度數(shù)是_度.
- 已知:如圖,AB∥EF∥CD,EG平分∠BEF,∠B+∠BED+∠D=192°,∠B-∠D=24°,求∠GEF的度數(shù).
- 如圖,若AB平行于EF,BC平行于DE,求∠E+∠B的度數(shù)
- 函數(shù)f(x)=sinx-cosx^2的最小值是?
- 英語翻譯
- I took my grandpa to the hospital this morning,_____ I missed the first class.
- So crazy
- 方差是各個(gè)數(shù)據(jù)與平均數(shù)之差的平方的平均數(shù)
- 函數(shù)y=f(x)與它反函數(shù)y=f^-1(x)怎么讀?
- These are photos of my families.Look at them 改錯(cuò)
猜你喜歡
- 1平面與平面重合,是否屬于平行一類?那重合的兩直線,也屬于平行一類的嗎?
- 2非洲每年因饑餓死亡的人數(shù)及現(xiàn)在饑餓人口數(shù)量拜托各位了 3Q
- 3decide to do sth.還=什么
- 4(7/8)o you think of london?B:5.____london is one of the liveliest cities
- 5啤酒可以托運(yùn)嗎
- 6邊長(zhǎng)為2√6的等邊三角形的中心到一邊的距離為?
- 7please give your hand to help me
- 8已知2的X次方等于3的Y次方等于6的Z次方不等等于1,證明X分之一加Y分之一等于Z分之一.
- 9幫我做做?
- 10機(jī)械分析天平TG628A的使用說明書
- 11in winter ,we wear warm coats to protect our bodies_.
- 12( )was most importance to her ,she told me,was her family it this what as