Recent additions (Page 16), Online Learning

Geometry Problems, Online Education

Geometry Problems 61-70

 

Cyclic quadrilateral, Congruence, and Concyclic Points

Geometry Problem 627
Cyclic Quadrilateral, Congruence, Concyclic Points.

Triangle, Incenter, Excenter, Distance

Geometry Problem 626
Triangle, Distance from the Incenter to an Excenter.

Triangle, Parallel, Angle Bisector

Geometry Problem 625
Triangle, Parallel Lines, Congruence, Angle Bisector.

Triangle, Incenter, Excenter, Similarity

Geometry Problem 624
Triangle, Incenter, Excenter, Incircle, Excircle, Similarity.

Triangle, Incenter, Excenter, Concyclic Points

Geometry Problem 623
Triangle, Incenter, Excenter, Incircle, Excircle, Concyclic Points.

Intersecting Circles

Geometry Problem 622
Square with Perpendiculars, Transversal, Congruence.

Two Parallelograms, Center, Parallel

Geometry Problem 621
Three Rectangles, Diagonals, Centers, Angles.

Three Rectangles, Centers, Angles

Geometry Problem 620
Three Rectangles, Diagonals, Centers, Angles.

Triangle Area, 30 Degrees, Incircle

Geometry Problem 619
Triangle Area, 30 Degrees, Incircle, Incenter, Tangent.

Triangle area, 60 degrees

Geometry Problem 618
Triangle Area, 60 Degrees, Incircle, Incenter, Tangent.

Right triangle area

Geometry Problem 617
Right Triangle Area, Incircle, Incenter, Tangent, 90 Degrees.

Parallelogram, Diagonal, Parallel

Geometry Problem 616
Parallelogram, Diagonals, Intersecting Lines, Parallel Lines.

Triangle, Square, Area

Geometry Problem 615
Right Triangle with a Square, Diagonals, Center, Area of Quadrilateral.

Parallelogram, Diagonal, Parallel

Geometry Problem 614
Parallelogram, Diagonals, Intersecting Lines, Parallel Lines.

Triangle, Altitude, Collinearity

Geometry Problem 613
Altitude of a Triangle, Perpendicular, Collinear Points.

iPad Apps iCrosss, Polyhedron, 3D

iPad, iPhone Apps: iCrosss, 3D Polyhedron - Video.
Application supports such kinds of polyhedra as regular polyhedra
 (Platonic solids), Pyramids, Prisms, Anti-prisms and Archimedean solids and duals.

Triangle, Altitude, Congruence

Geometry Problem 612
Altitude of a Triangle, Perpendicular, Congruence.

Triangle, Altitude, Collinearity

Geometry Problem 611
Altitude of a Triangle, Perpendicular, Collinear Points, Parallel.

Intersecting Circles, 90 degrees

Geometry Problem 610
Intersecting Circles, Radius, Parallel, Common Tangent, Angle, 90 Degrees.

Triangle, Perpendiculars, Collinearity

Geometry Problem 609
Triangle, Perpendiculars, 90 Degrees, Collinearity.

Square with Right triangles

Geometry Problem 608
Square with Right Triangles, Metric Relations, Congruence, Measurement.

Intersecting Circles

Geometry Problem 607
Intersecting Circles, Triangles, Metric Relations, Measurement.

Isosceles triangle

Geometry Problem 606
Isosceles Triangles, Perpendicular and Parallel Lines.

Square, Circle, Metric Relation

Geometry Problem 605
Circle, Square, Chord, Perpendicular, Circular Segment, Metric Relations.

Parallelogram Area

Geometry Problem 604
Parallelograms, Triangle, Trapezoid, Area.

Parallelogram, Diagonals

Geometry Problem 603
Parallelogram, Diagonals, Congruence, Concurrency.

Triangle, Angle, Congruence

Geometry Problem 602
Triangle, Angles, 30 and 45 Degrees, Cevian, Congruence.

Cyclic quadrilateral, Incenter, Excenter

Geometry Problem 601
Cyclic Quadrilateral, Incenter, Excenter, Rectangle.

Geometry in Houston

Geometry in the Real World, Houston, Texas - Slideshow and 3D Map.

Brianchon Theorem

Brianchon's Theorem in a Circumscribed Hexagon.

Geometry in Miami

Geometry in the Real World, Miami, Florida - Slideshow.

Brianchon Corollary

Brianchon Corollary, Circumscribed Hexagon, Concurrency lines.

Carnot's Theorem, Acute Triangle

Carnot's Theorem in an Acute Triangle.

Carnot's Theorem, Obtuse Triangle

Carnot's Theorem in an Obtuse Triangle.

Circle Area, Tangent

Geometry Problem 600
Circle, Area, Tangent, Semicircle, Tangency Point.

Regular Hexagon, Square, Midpoint, Angle, Degrees

Geometry Problem 599
Regular Hexagon, Square, Midpoint, Angle, Degrees.

iPad Apps: MindHD

iPad Apps: MindHD, Mind Map Generator, Example using Dropbox.

The Annunciation by Leonardo

The Annunciation by Leonardo and Golden Rectangles.

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