Pythagoras and Right Triangles and Problems

Plane Geometry: Pythagoras, Right Triangle, Metric Relations

Right Triangles Theorems and Problems Index 1

Metric Relations in a Right Triangle

Metric Relations in a Right Triangle, Theorems and Problems.

Pythagorean spiral or Square Root Spiral or Spiral of Theodorus

Pythagorean spiral or Square Root Spiral or Spiral of Theodorus.

Pythagoras and Delaunay Triangulation Art, iPad Apps: Poly

Pythagoras and Delaunay Triangulation Art, iPad Apps: Poly.
Polygonal Art Illustration.

Right Triangles, Formulas and Facts
Pythagorean theorem, Similarity, Geometric mean, hypotenuse, cathetus, semiperimeter, altitude, median, similar shapes areas, centers, orthocenter, incenter, centroid, circumcenter, radius, inradius, circumradius, exradius, circles, incircle, circumcircle, excircle.


The General Extension to Pythagoras' Theorem.

Problem 1386 Thabit ibn Qurra Theorem,Pythagorean Theorem to any triangle

Geometry Problem 1386.
Thabit ibn Qurra (826 -901) Theorem and more conclusions, generalized Pythagorean Theorem to any triangle.

Pythagoras curiosity. Online tutoring.

Geometry Problem 884: The Pythagorean Curiosity
Right Triangles and squares, fifteen conclusions.

iPad Geoboard: Pythagorean Theorem proof by Leonardo 

Geoboard for iPad Pythagorean Theorem Proof by Leonardo.

Right Triangle, Altitude, Incircle Index

Right triangle, Altitude, Incircle
Right Triangle, Altitude to the Hypotenuse, Incircle, Incenter, Inradius, Angle Bisector, Theorems and Problems, Index.

Right Triangle Word Cloud

Right Triangle Word Cloud. Geometry for Kids.

Geometry problem 1255

Geometry Problem 1255.
Right Triangle, Angle, 90 Degrees, Perpendicular, Collinear Points.

Geometry problem 1253

Geometry Problem 1253.
Triangle, Orthocenter, Circle, Circumcircle, Altitude, Perpendicular, 90 Degree, Concurrency.

Geometry problem 1211

Geometry Problem 1211
Right Triangle, Altitude, Angle Bisector, 45 Degrees.

Geometry problem 1203

Geometry Problem 1203
Right Triangle, Square, Angle Bisector, Three Congruent Quadrilaterals.

Geometry problem 1200

Geometry Problem 1200
Square, Right Triangle, Perpendicular, 90 Degrees, Equal Areas.

Geometry problem 1198

Geometry Problem 1198
Right Triangle, Square, Rectangle, Quadrilateral, Altitude, Equal Areas.

Geometry problem 1196

Geometry Problem 1196
Parallelogram, Midpoint, Metric Relations.

Geometry problem 1195

Geometry Problem 1195
Square, Two Rectangles, Congruence, Metric Relations.

Geometry problem 1194

Geometry Problem 1194
Equilateral Triangle, Perpendicular, Distance, Side, Metric Relations.

Geometry problem 1165

Geometry Problem 1165.
Right Triangle, Circle, Center, Radius, Cathetus, Perpendicular, 90 Degrees, Perimeter, Metric Relations.

Geometry problem 1159

Geometry Problem 1159.
Triangle, Circumcircle, Sagitta, Chord, Arc, Metric Relations.

Geometry problem 1158

Geometry Problem 1158.
Four Tangent Circles, Tangent Chord, Radius, Metric Relations.

Geometry problem 1157

Geometry Problem 1157.
Four Circles, Mutually Tangent, 90 Degrees, Radius, Metric Relations.

Geometry problem 1156

Geometry Problem 1156.
Square, Tangent Line, 90 Degrees, Metric Relations.

Geometry problem 1155

Geometry Problem 1155.
Right Triangle, Altitude, Incenter, Incircle, Area.

Geometry problem 1154

Geometry Problem 1154.
Sangaku: Three circles and a tangent line.

Geometry problem 1151

Geometry Problem 1151.
Circle, Diameter, Chord, Perpendicular, 90 Degrees, Metric Relations.

Geometry problem 1148

Dynamic Geometry Problem 1148
Static Geometry Problem 1148.
Right Triangle, Incircle, Circumcircle, Tangent, Radius. GeoGebra, HTML5 Animation for Tablets (iPad, Nexus).

Geometry problem 1128

Geometry Problem 1128.
Right Triangles, Medians, Parallel, Angles, Congruence, Half the measure.

Geometry Problem 1120

Geometry Problem 1120.
Isosceles Right Triangle, 120 Degree, Angle, Equilateral, Metric Relations.

Geometry Problem 1118

Geometry Problem 1118.
Right Triangle, Angle Trisection, Concyclic Points, Cyclic Quadrilateral.

Geometry Problem 1117

Geometry Problem 1117.
Right Triangle, Angle Trisection, 90 Degrees, Parallel Lines.

Geometry Problem 1116

Geometry Problem 1116.
Right Triangle, Angle Trisection, 90 Degrees, Perpendicular Lines.

Geometry Problem 1115

Geometry Problem 1115.
Right Triangle, Angle Trisection, Equilateral Triangle.

Geometry Problem 1114

Geometry Problem 1114.
Right Triangle, Angle Trisection, Isosceles, Congruence.

Geometry Problem 1111

Geometry Problem 1111.
Right Triangle, External Squares, Cathetus, Angle Bisector, Area, Geometric Mean.

iPad Geoboard: Pythagorean Theorem proof 

Geoboard for iPad Pythagorean Theorem Proof, Squares (Problem 540).

Pythagoras Theorem, 47th Proposition of Euclid's Book I

The significance of the Pythagorean theorem by Jacob Bronowski.
Pythagorean Theorem, 47th Proposition of Euclid's Book I.

Mind Map of the Pythagorean Theorem
Proofs by shears, translation, similarity. Facts.

Word Cloud of Pythagoras

Word Cloud of Pythagorean Theorem

Einstein and Pythagoras theorem proof

Pythagoras and Circle Area

Hippocrates and Squaring the Circle

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Last updated: Sep 22, 2018