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sattari [20]
3 years ago
8

Perpendicular lines are two distinct coplanar lines that intersect to form what type of angle?

Mathematics
2 answers:
11111nata11111 [884]3 years ago
3 0
<span>Perpendicular lines are two distinct coplanar lines that intersect to form what type of angle right angle </span>
liberstina [14]3 years ago
3 0

Answer:

Right Angle

Step-by-step explanation:

Perpendicular line means that the line will divide something equally meaning both sides will be 90⁰ (right angle).

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The sum of the first n odd numbers is n squared! So, the short answer is that the sum of the first 70 odd numbers is 70 squared, i.e. 4900.

Allow me to prove the result: odd numbers come in the form 2n-1, because 2n is always even, and the number immediately before an even number is always odd.

So, if we sum the first N odd numbers, we have

\displaystyle \sum_{i=1}^N 2i-1 = 2\sum_{i=1}^N i - \sum_{i=1}^N 1

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The second sum is simply the sum of N ones:

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So, the final result is

\displaystyle \sum_{i=1}^N 2i-1 = 2\sum_{i=1}^N i - \sum_{i=1}^N 1 = N(N+1)-N = N^2+N-N = N^2

which ends the proof.

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