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[单选题]
已知A点坐标为(12345.7,437.8),B点坐标为(12322.2,461.3),则AB边的坐标方位角为()。
A.45°
B.315°
C.135°
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A.45°
B.315°
C.135°
已知线段MN的长为5,若M点在y轴上,而N点坐标为(3,-1),则M点坐标为__________.
已知点A(-5,3),B(3,1),则线段AB中点的坐标为() (A)(4,-1) (B)(-4,1) (C)(-2,4) (D)(-1,2)
A3300,141.400m
B2400,141.400m
C1500,141.400m
D600,141.400m