Apps on Mathematics

Walter Fendt
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www.walter-fendt.de/html5/men (HTML5, 53 apps, 2022-02-10)
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Arithmetic

Calculation without Rounding Errors 06/22/2020 - 08/17/2020
Unit Conversion 03/25/2001 - 04/19/2017
Primyphos - a Game about Prime Factorization 10/18/1998 - 11/20/2015
Table of Prime Numbers from 1 to 1 000 000 000 000 10/17/2003 - 10/18/2015

Algebra

Online Calculator Algebra 08/17/2020 - 08/21/2021

Plane Geometry

Angles at Parallel Lines 03/21/2006 - 04/05/2018
Sum of Angles in a Triangle 06/11/1998 - 04/05/2018
Simple Geometric Transformations 06/19/1999 - 04/19/2017
Thales' Circle 06/17/1998 - 07/07/2015
Special Lines and Circles in a Triangle 10/25/1998 - 07/07/2015
Circumcircle of a Triangle 11/25/1997 - 01/04/2021
Incircle of a Triangle 11/04/1998 - 01/05/2021
Cyclic Quadrilateral (Inscribed Quadrilateral) 11/01/1997 - 01/17/2016
Tangential Quadrilateral (Circumscribed Quadrilateral) 10/01/2000 - 01/17/2016
Regular Polygons (2 apps) 04/27/2018
Angles at the Circle 11/01/1997 - 07/08/2015
Intercept Theorem 04/27/2000 - 04/26/2017
Pythagorean Theorem (1) 02/19/2001 - 04/22/2017
Pythagorean Theorem (2) 11/01/1997 - 07/08/2015
Twin Circles of Archimedes 04/11/2000 - 10/18/2015
Circle Inversion 03/23/2017 - 04/22/2017
Tangent Circles 10/05/2017
Problem of Apollonius (10 apps) 12/27/2008 - 03/19/2017
Pappus Chain 03/04/2005 - 10/18/2015
Circumference and Area of a Circle 11/22/2002 - 02/03/2021

Stereometry

Platonic Solids 06/08/1998 - 07/07/2015
Volume of a Sphere (Cavalieri's Principle) 09/04/2000 - 07/08/2015

Trigonometry

Sine, Cosine and Tangent of an Angle 12/25/1997 - 07/07/2015

Spherical Geometry

Spherical Triangle 02/06/1999 - 02/26/2016
Spherical Distance between Two Points 01/16/2021

Analytic Geometry

Components of a Vector 07/22/1998 - 10/18/2015
Vector Equation of a Line in Three-Dimensional Space 09/16/1999 - 10/28/2015

Analysis

Slope of a Secant / Tangent Line 02/22/1998 - 07/08/2015
First and Second Derivative of a Function 10/10/1999 - 11/20/2015
Tangents to Graphs of Functions 09/06/2017 - 10/07/2017
Osculating Circles to Graphs of Functions 09/06/2017 - 12/15/2017

Special Curves

Epicycloids and Hypocycloids 10/23/2017 - 02/24/2020
Right Strophoid 11/09/2020
Elliptic Curves 11/19/2020 - 11/22/2020

Complex Numbers

Arithmetic Operations with Complex Numbers 12/04/1999 - 11/24/2015

Logic

Online Calculator Propositional Logic 08/18/2021 - 08/20/2021

Recreational Mathematics

Three Jugs Problem 09/02/1998 - 07/08/2015
Tower of Hanoi 02/06/2022 - 02/07/2022

Walter Fendt, February 10, 2022
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