Mình nghĩ là tính tổng các số từ 1 đến 2014 đó
2014 - 1 = 2013
2013 + 1 = 2014
2014 : 2 = 1007
1007 x (2014 + 1) = 2029105
Mình nghĩ là tính tổng các số từ 1 đến 2014 đó
2014 - 1 = 2013
2013 + 1 = 2014
2014 : 2 = 1007
1007 x (2014 + 1) = 2029105
given a parallel line xy and zt. Three point A,B,C are on line xy, two point D,E are on line zt. Draws line passing through the pair of point. How many lines are there?
Given that 4 points A, B, C, D are on the same line. How many segments are there?
Given that 4 points A, B, C, D are on the same line. How many segments are there?
Given two parallel lines xy & zt. Three points A,B & C are on line xy, two points D & E are on line zt. Draw lines passing through the pairs of points. How many lines are there? (including xy & zt)
Q21: How many triangles are there?
22
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GIÚP MIK VS,CẢM ƠN MN NHIỀu
1) Give that 4 points A, B, C, D are on the same line. How many segments are ther?
Lamps poles are installed along the roadside on every 8 m
Markings are made on the roadside on every 12 m
How many markings are there beside the lamp poles along a 240m long road
given 2 parrel lines xy and zt.Three point ABC are on line xy,two point DE are on line zt.Draw lines pasing throught the pair of points
Given 100 points with any 3 points non-aligned. Draw all the line passing through any 2 of these points. How many lines are there?