本课配套习题挑战模式1/5
单选题
难度系数:
1.如图,直线a、b被c所截,若a∥b,∠1=45°,∠2=65°,则∠3的度数为( )
A: 110° |
B: 115° |
C: 120° |
D: 130° |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u5LiJ6KeS5b2i55qE5aSW6KeS5oCn6LSo5b6X5Yiw4oigMSviiKAyPeKIoDQ=
- 提示2:5qC55o2u5bmz6KGM57q/55qE5oCn6LSo5b6X5Yiw4oigMz3iiKA0
- 答案:QQ==
6Kej562U77ya5qC55o2u5LiJ6KeS5b2i55qE5aSW6KeS5oCn6LSo77yMPGJyPuKItOKIoDEr4oigMj3iiKA0PTExMMKw77yMPGJyPuKItWHiiKVi77yMPGJyPuKItOKIoDM94oigND0xMTDCsO+8jDxicj7mlYXpgInvvJpB77yO
本课配套习题挑战模式2/5
单选题
难度系数:
2.如图,在△ABC中,CD是∠ACB的平分线,∠A=80°,∠ACB=60°,那么∠BDC=( )
A: 80° |
B: 90° |
C: 100° |
D: 110° |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u6KeS5bmz5YiG57q/55qE5oCn6LSo5YWI5rGC5Ye64oigRENB55qE5bqm5pWw
- 提示2:5YaN5qC55o2u5LiJ6KeS5b2i5YaF6KeS5LiO5aSW6KeS55qE5YWz57O75rGC5Ye64oigQkRD55qE5bqm5pWw
- 答案:RA==
6Kej562U77ya4oi1Q0TmmK/iiKBBQ0LnmoTlubPliIbnur/vvIziiKBBQ0I9NjDCsO+8jDxicj7iiLTiiKBBQ0Q9MzDCsO+8iOW5s+WIhue6v+eahOWumuS5ie+8ie+8jDxicj7iiLXiiKBBPTgwwrDvvIw8YnI+4oi04oigQkRDPTExMMKw77yI5LiJ6KeS5b2i55qE5LiA5Liq5aSW6KeS562J5LqO5LiO5a6D5LiN55u46YK755qE5Lik5Liq5YaF6KeS55qE5ZKM77yJ77yOPGJyPuaVhemAiUTvvI4=
本课配套习题挑战模式3/5
单选题
难度系数:
3.已知如图,△ABC为直角三角形,∠C=90°,若沿图中虚线剪去∠C,则∠1+∠2等于( )
A: 315° |
B: 270° |
C: 180° |
D: 135° |
一次做对,真牛!
+5奖励规则>
- 提示1:5Yip55So5LiJ6KeS5b2i5YaF6KeS5LiO5aSW6KeS55qE5YWz57O7
- 提示2:5LiJ6KeS5b2i55qE5Lu75LiA5aSW6KeS562J5LqO5ZKM5a6D5LiN55u46YK755qE5Lik5Liq5YaF6KeS5LmL5ZKM
- 答案:Qg==
PGltZyB3aWR0aD0xMzQgaGVpZ2h0PTEwNyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzNCL0VCL3JCQUNKbFRDSVNyelpFZk1BQUFXbHM1MWtrNDkwMy5wbmciIGFsdD3pnZLmnpzlrabpmaI+PGJyPuino+etlO+8muKIteKIoDHjgIHiiKAy5piv4pazQ0RF55qE5aSW6KeS77yMIDxicj7iiLTiiKAxPeKIoDQr4oigQ++8jOKIoDI94oigMyviiKBD77yMPGJyPuWNs+KIoDEr4oigMj0y4oigQyvvvIjiiKAzK+KIoDTvvInvvIw8YnI+4oi14oigMyviiKA0PTE4MMKwLeKIoEM9OTDCsO+8jDxicj7iiLTiiKAxK+KIoDI9MsOXOTDCsCs5MMKwPTI3MMKw77yOPGJyPuaVhemAie+8mkLvvI4=
本课配套习题挑战模式4/5
单选题
难度系数:
4.如图,∠BDC=98°,∠C=38°,∠B=23°,∠A的度数是( )
A: 61° |
B: 60° |
C: 37° |
D: 39° |
一次做对,真牛!
+5奖励规则>
- 提示1:5L2c55u057q/QUQ=
- 提示2:5qC55o2u5LiJ6KeS5b2i55qE5aSW6KeS5oCn6LSo
- 答案:Qw==
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
本课配套习题挑战模式5/5
单选题
难度系数:
5.如图,点D,E在△ABC的边上,CD与BE相交于点F.则∠1,∠2,∠3,∠4应满足的关系是( )
A: ∠1+∠4=∠2+∠3 |
B: ∠1+∠2=∠3+∠4 |
C: ∠1+∠2=∠4-∠3 |
D: ∠2-∠1=∠3+∠4 |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u5LiJ6KeS5b2i5aSW6KeS55qE5oCn6LSo5b6X5Ye64oigMyviiKA0PeKIoENFRg==
- 提示2:4oigMSviiKBDRUY94oigMg==
- 答案:RA==
6Kej562U77ya4oi14oigQ0VG5piv4pazQUJF55qE5aSW6KeS77yMPGJyPuKItOKIoDMr4oigND3iiKBDRUbvvIw8YnI+4oi14oigMuaYr+KWs0NFRueahOWkluinku+8jDxicj7iiLTiiKAxK+KIoENFRj3iiKAy77yM5Y2z4oigMi3iiKAxPeKIoENFRu+8jDxicj7iiLTiiKAyLeKIoDE94oigMyviiKA077yOPGJyPuaVhemAiUTvvI4=