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March 27th, 2018, 04:27 AM   #1
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Maximum Chord Angle

1. What is the maximum chord angle in the circle?
2. What is the maximum chord angle that one of its side is diameter?
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March 27th, 2018, 06:07 AM   #2
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Do you realise that most of your "questions" can
be answered by using google?
Thanks from greg1313
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March 27th, 2018, 06:20 AM   #3
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But MY English is bad. And the link you gave me don't answer my other question.
I ask my question: Why the rhombus his vertix can't be on a circle, and you not give me a answer...
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March 27th, 2018, 07:21 AM   #4
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Okay, do you know what a "chord" is? Do you know what a "chord angle" is? A "chord" in a circle is a line segment that that has its endpoints on the circle. Drawing lines from the center of a circle to the end points of the chord defines two angles, one less than or equal to 180 degrees the other larger. The "chord angle" is the smaller of those angles.

The real question is whether a diameter of a circle counts as a chord. Both Wikipedi (https://en.wikipedia.org/wiki/Chord_(geometry)) and Mathisfun.com (https://www.mathsisfun.com/definitions/chord.html) say it is. And a diameter divides a circle into two equal parts, each with "chord angle" 360/2= 180 degrees.

Quote:
I ask my question: Why the rhombus his vertix can't be on a circle, and you not give me a answer...
That question was not in your original post. And doesn't quite make sense. A rhombus is a parallelogram with four equal sides. A square is a special case of a rhombus and all four of its vertices do lie on a circle. If you specify a NON=square parallogram (angle are not right angles) then its center will be at the intersection of the two diagonals. But those two diagonals are of different lengths. There exist two circles with center at the center of the rhombus passing through either of the two sets of diagonally opposite vertices.
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Last edited by Country Boy; March 27th, 2018 at 07:33 AM.
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March 27th, 2018, 08:02 AM   #5
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Quote:
Originally Posted by policer View Post
But MY English is bad.
You could look for an English girlfriend
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