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# There is a regular pentagram on the picture. Find angle A. 2

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There is a regular pentagram on the picture. Find angle A. 2 [#permalink]

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06 Nov 2003, 04:46
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

There is a regular pentagram on the picture. Find angle A. 2 minutes.
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penta.doc [175.5 KiB]

SVP
Joined: 03 Feb 2003
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Kudos [?]: 245 [0], given: 0

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06 Nov 2003, 11:26
36 is correct
A central angle...
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06 Nov 2003, 11:40
Can someone explain
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11 Nov 2003, 01:17
a central angle is twice the angle we need
CA is 360/5=72
A=72/2=36
11 Nov 2003, 01:17
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