File:FS RV dia.png
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Contents
Summary edit
DescriptionFS RV dia.png |
English: Largest quarter circle in a rectangular isosceles triangle
Deutsch: Größer Viertelkreis in einem gleichschenkligen rechtwinkligen Dreieck |
Date | |
Source | Own work |
Author | Hans G. Oberlack |
Shows the largest quarter circle within a right isosceles triangle.
Elements edit
Base is the right isosceles triangle of side length and centroid
Inscribed is the largest possible quarter circle with radius and centroid
General case edit
Segments in the general case edit
0) The side length of the base right triangle
1) Radius of the quarter circle (See calculation 1).
Perimeters in the general case edit
0) Perimeter of base triangle
1) Perimeter of the quarter circle (See calculation 2 )
Areas in the general case edit
0) Area of the base triangle
1) Area of the inscribed circle (See calculation 3)
Centroids in the general case edit
Centroid positions are measured from the centroid point of the base shape
0) Centroid positions of the base triangle:
1) Centroid positions of the inscribed quarter circle: , (see calculation 4)
Normalised case edit
In the normalised case the area of the base is set to 1.
Segments in the normalised case edit
0) Side length of the base triangle
1) Radius of the inscribed quarter circle
Perimeters in the normalised case edit
0) Perimeter of base triangle
1) Perimeter of the inscribed quarter circle
S) Sum of perimeters
Areas in the normalised case edit
0) Area of the base triangle
1) Area of the inscribed quarter circle
Centroids in the normalised case edit
Centroid positions are measured from the centroid point of the base shape.
0) Centroid positions of the base triangle:
1) Centroid positions of the inscribed circle:
Distances of centroids edit
The distance between the centroid of the base element and the centroid of the circle is:
Identifying number edit
Apart of the base element there is only one shape allocated. Therefore the integer part of the identifying number is 1.
The decimal part of the identifying number is the decimal part of the sum of the perimeters and the distances of the centroids in the normalised case.
So the identifying number is:
Calculations edit
Calculation 1 edit
Because FS_R is a right isosceles triangle the following equations hold:
(1)
(2)
(3)
(4)
Since is tangent to the quarter circle in point the triangle has an right angle in . This means:
(5)
, applying equations (1),(3) and (4)
Calculation 2 edit
Perimeter of the quarter circle:
Calculation 3 edit
Area of the inscribed quarter circle:
Calculation 4 edit
Centroid of the inscribed circle measured from the centroid of the base triangle:
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Licensing edit
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 19:09, 12 March 2022 | 687 × 601 (20 KB) | Hans G. Oberlack (talk | contribs) | upload corrected | |
17:55, 12 March 2022 | 687 × 601 (20 KB) | Hans G. Oberlack (talk | contribs) | Uploaded own work with UploadWizard |
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File usage on Commons
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Horizontal resolution | 59.06 dpc |
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Vertical resolution | 59.06 dpc |
Software used |