‘C’ –> ‘circumference
‘D’ –> ‘diameter’
‘R’ –> ‘radius’
‘O’ –> ‘center’
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-as of [11 APRIL 2024]–
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-CIRCLE CALC-
(THE iOS APP)
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*CIRCLE MEASUREMENT TOOLS* —>
*COMPASS*
*PROTACTER*
(i prefer ‘er’ NOT ‘or’)
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*ONLINE CALCULATOR*
(“omni-calculator”)
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*BISECTING LINES*
*draw a line* —>
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*position a ‘compass’ on the line’s 2 endpoints* —>
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*using each endpoint as a ‘circle center’, draw ‘circle segments’ from each endpoint so that they intersect in 2 places on opposite sides of the line* —>
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*draw a line to connect
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*a circle is a ‘simple closed shape’ in ‘euclidean geometry’*
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(it is the ‘set of all ‘points’ in a ‘plane’ that are at a ‘given distance’ from a ‘given point’ (the ‘center’)”)
(equivalently it is the ‘curve’ traced out by a ‘point’ that moves so that its distance from a given point is ‘constant’)
(the ‘distance’ between any of the ‘points’ and the ‘center’ is called the ‘radius’)
(a ‘circle’ is a ‘simple closed curve’ which divides the plane into ‘2 regions’ (an ‘interior’ + an ‘exterior’))
(in everyday use, the term “circle” may be used interchangeably to refer to either the ‘boundary’ of the ‘figure’, or to the ‘whole figure’ including its ‘interior’)
(in ‘strict technical usage’, the ‘circle’ is only the ‘boundary’ and the ‘whole figure’ is called a ‘disc’)
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(a ‘circle’ may also be defined as a special kind of ‘ellipse’ in which the ‘2 foci’ are ‘coincident’ and the ‘eccentricity’ is ‘0’, or the 2-dimensional shape enclosing the most ‘area’ per ‘unit perimeter squared’, using ‘calculus of variations’)
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(a common alternative for ‘radian’ is ‘degree’)
(a circle has ‘360 degrees’)
(an ‘arc minute’ is 1/60 of a ‘degree’)
(an ‘arc second’ is 1/3600 of a ‘degree’)
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*👨🔬🕵️♀️🙇♀️*SKETCHES*🙇♂️👩🔬🕵️♂️*
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💕💝💖💓🖤💙🖤💙🖤💙🖤❤️💚💛🧡❣️💞💔💘❣️🧡💛💚❤️🖤💜🖤💙🖤💙🖤💗💖💝💘
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*🌈✨ *TABLE OF CONTENTS* ✨🌷*
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🔥🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥🔥