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allochka39001 [22]
2 years ago
5

How many angels does a rectangle have

Mathematics
1 answer:
nekit [7.7K]2 years ago
4 0
4 because each corner has 1
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So even postive integers are by defention in form 2k where k is a natural number so
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divide bith sides of equation 1 by 2
0.5S=1+2+3+4+5+...........+k-1+k
S=2(k+(k-1)+..............................+2+1)
divide both sides of equation 2 by 2
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so the sum will be equal to
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for the first 3 even number there sums will be
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2 years ago
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