初二数学 (苏教版上册)
特殊的平行四边形
本课配套习题挑战模式1/5
单选题
难度系数:
1.如图,点E在正方形ABCD内,满足∠AEB=90°,AE=6,BE=8,则阴影部分的面积是( )
A: 48 |
B: 60 |
C: 76 |
D: 80 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOeUseW3suefpeW+l+KWs0FCReS4uuebtOinkuS4ieinkuW9ou+8jOeUqOWLvuiCoeWumueQhuaxguato+aWueW9oueahOi+uemVv0FC
- 提示2:IOeUqFM8c3ViPumYtOW9semDqOWIhjwvc3ViPj1TPHN1Yj7mraPmlrnlvaI8L3N1Yj48c3ViPkFCQ0Q8L3N1Yj4tUzxzdWI+4pazPC9zdWI+PHN1Yj5BQkU8L3N1Yj7msYLpnaLnp68=
- 答案:Qw==
6Kej77ya4oi14oigQUVCPTkwwrDvvIxBRT0277yMQkU9OO+8jDxicj7iiLTlnKhSdOKWs0FCReS4re+8jEFCPHN1cD4yPC9zdXA+PUFFPHN1cD4yPC9zdXA+K0JFPHN1cD4yPC9zdXA+PTEwMO+8jDxicj7iiLRTPHN1Yj7pmLTlvbHpg6jliIY8L3N1Yj49UzxzdWI+5q2j5pa55b2iQUJDRDwvc3ViPi1TPHN1Yj7ilrNBQkU8YnI+PC9zdWI+PUFCPHN1cD4yPC9zdXA+LTxpbWcgd2lkdGg9OCBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BMC9CNS9yQkFDRTFPV3VFalNnaUZ4QUFBQkRsTkJqODAzODUucG5nIj7Dl0FFw5dCRT0xMDAtMjQ9NzY8YnI+5pWF6YCJQy4g
本课配套习题挑战模式2/5
单选题
难度系数:
2.如图,将边长为的正方形ABCD沿对角线AC平移,使点A移至线段AC的中点A′处,得新正方形A′B′C′D′,新正方形与原正方形重叠部分(图中阴影部分)的面积是( )
A: |
B: |
C: 1 |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOagueaNrumimOaEj+WPr+W+l++8jOmYtOW9semDqOWIhueahOWbvuW9ouaYr+ato+aWueW9og==
- 提示2:IOato+aWueW9okFCQ0TnmoTovrnplb/kuLo8aW1nIHdpZHRoPTIzIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0EwL0I1L3JCQUNFMU9XdUV1dzFLTkRBQUFCa1g2Q09zczE2MS5wbmciPu+8jOWImUFDPTLvvIzlj6/lvpflh7pB4oCyQz0x77yM5Y+v5b6X5Ye65YW26Z2i56evLg==
- 答案:Qg==
6Kej77ya4oi15q2j5pa55b2iQUJDROeahOi+uemVv+S4ujxpbWcgd2lkdGg9MjMgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQTAvQjUvckJBQ0UxT1d1RXV3MUtOREFBQUJrWDZDT3NzMTYxLnBuZyI+PGJyPuKItEFDPTLvvIw8YnI+5Y+I4oi154K5QeKAsuaYr+e6v+autUFD55qE5Lit54K577yMPGJyPuKItEHigLJDPTHvvIw8YnI+4oi0UzxzdWI+6Zi05b2xPC9zdWI+PTxpbWcgd2lkdGg9MTA0IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzY0Lzk5L3JCQUNGRk9XdUV2UV9VVWxBQUFDRzIzV1hHVTMwOC5wbmciPjxicj7mlYXpgIlCLiA=
本课配套习题挑战模式3/5
单选题
难度系数:
3.在下面图形中,每个大正方形网格都是由边长为1的小正方形组成,则图中阴影部分面积最大的是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOagueaNruato+aWueW9oueahOaAp+i0qOaKiuS4jeinhOWImeWbvuW9oueahOmdouenr+WPr+S7peeci+aIkOaYr+inhOWImeWbvuW9oueahOmdouenr+eahOWSjOaIluW3ru+8jOS7juiAjOWPr+W+l+WIsOWbvuS4remYtOW9semDqOWIhumdouenr+acgOWkp+eahOWbvuW9oi4=
- 答案:RA==
6Kej77ya5LiN6KeE5YiZ5Zu+5b2i55qE6Z2i56ev5Y+v5Lul55yL5oiQ5piv6KeE5YiZ5Zu+5b2i55qE6Z2i56ev55qE5ZKM5oiW5beu77yM5qC55o2u5q2j5pa55b2i55qE5oCn6LSo6K6h566X5b6X77yM5Zu+5Lit6Zi05b2x6YOo5YiG6Z2i56ev5pyA5aSn55qE5piv56ys5Zub6YCJ6aG5LiA8YnI+5pWF6YCJRC4g
本课配套习题挑战模式4/5
单选题
难度系数:
4.某正方形园地是由边长为1的四个小正方形组成的,现在园地上建一个花园(即每个图中的阴影部分),使花坛面积是园地面积的一半,以下图中的设计不合要求的是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOagueaNruato+aWueW9oueahOWvueensOaAp++8jOmAkOS4qui/m+ihjOWIpOaWre+8jOWPr+efpUHjgIFD44CBROS4reeahOiKseWdm+mdouenr+Wdh+aYr+WbreWcsOmdouenr+eahOS4gOWNiu+8jOiAjELkuI3mmK8u
- 答案:Qg==
本课配套习题挑战模式5/5
单选题
难度系数:
5.正方形ABCD,正方形BEFG和正方形RKPF的位置如图所示,点G在线段DK上,且G为BC的三等分点,R为EF中点,正方形BEFG的边长为4,则△DEK的面积为( )
A: 10 |
B: 12 |
C: 14 |
D: 16 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOi/nkRC77yMR0XvvIxGS++8jOWImURC4oilR0XiiKVGSw==
- 提示2:IOagueaNruetieW6leetiemrmOeahOS4ieinkuW9oumdouenr+ebuOetie+8jOato+aWueW9okJFRkfnmoTovrnplb/kuLo05Y+v5rGC5Ye6UzxzdWI+4pazPC9zdWI+PHN1Yj5ER0U8L3N1Yj49UzxzdWI+4pazPC9zdWI+PHN1Yj5HRUI8L3N1Yj7vvIxTPHN1Yj7ilrM8L3N1Yj48c3ViPkdLRTwvc3ViPj1TPHN1Yj7ilrM8L3N1Yj48c3ViPkdGRTwvc3ViPg==
- 提示3:IOWGjeeUsVM8c3ViPumYtOW9sTwvc3ViPj1TPHN1Yj7mraPmlrnlvaI8L3N1Yj48c3ViPkdCRUY8L3N1Yj7ljbPlj6/msYLlh7rnrZTmoYgu
- 答案:RA==
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