Dr. Geo free
Free AppAbout Dr. Geo free
In this free version, the following features are not activated: parallel and perpendicular lines, circle and save a sketch. Purchase the complete version to get it activated.
Be a geometer with Dr. Geo: construct and manipulate interactive
geometric models. Learn geometry (and physics, too!) visually and
interactively.
- Construct quadrilaterals and explore the properties of the
parallelogram, rectangle, rhombus or square.
- Draw a triangle and its circumscribing circle, then drag one of its
corners slowly to cross the opposite side. Visually observe why a
straight line is an "infinite circle". Get junior high school kids
motivated with the idea of "crosscap" in projective geometry and
topology.
- Learn about the symmetry you can find in car logos.
- Understand why the measures of the interior angles of a triangle
always add up to 180 degrees.
- Visualize the properties of the rectangle, isosceles or equilateral
triangles.
- Understand how a Newtonian telescope works and play with its model.
- Play with the Trammel of Archimedes to draw ellipse.
- Draw an ellipse, then drag one of its focii, and watch how it
gradually becomes a hyperbola.
- Move the focus of a lens in a Dr. Geo sketch, and learn how a real
inverted image morphs into a virtual upright image. Use the macro
function to stack two lens and create your microscope in Dr. Geo.
- Discover how Eratosthenes calculated the circumference of the Earth.
Plus many more to explore or to create yourself.
All in all Dr. Geo is an interactive geometry application. It allows one to
create a geometric model you can manipulate according to its
constraints. It is usable at home or at school, in primary or
secondary education level. With the free Desktop version, you can also
construct very elaborated sketches to share with your friends,
students or kids on tablet.
With Dr. Geo you construct:
- free point, mobile point on a curve, intersection point, point at
the middle of two points, or segment middle.
- line, parallel line, perpendicular line, perpendicular bisector,
angle bisector, ray, segment, vector, circle, arc, polygon, locus.
- geometric transformation: symmetry, reflection, translation,
homothety (scale).
- distance between objects, length, coordinates, equations, free text.
- macro-construction: teach Dr. Geo how to construct complex objects
for you.
Be a geometer with Dr. Geo: construct and manipulate interactive
geometric models. Learn geometry (and physics, too!) visually and
interactively.
- Construct quadrilaterals and explore the properties of the
parallelogram, rectangle, rhombus or square.
- Draw a triangle and its circumscribing circle, then drag one of its
corners slowly to cross the opposite side. Visually observe why a
straight line is an "infinite circle". Get junior high school kids
motivated with the idea of "crosscap" in projective geometry and
topology.
- Learn about the symmetry you can find in car logos.
- Understand why the measures of the interior angles of a triangle
always add up to 180 degrees.
- Visualize the properties of the rectangle, isosceles or equilateral
triangles.
- Understand how a Newtonian telescope works and play with its model.
- Play with the Trammel of Archimedes to draw ellipse.
- Draw an ellipse, then drag one of its focii, and watch how it
gradually becomes a hyperbola.
- Move the focus of a lens in a Dr. Geo sketch, and learn how a real
inverted image morphs into a virtual upright image. Use the macro
function to stack two lens and create your microscope in Dr. Geo.
- Discover how Eratosthenes calculated the circumference of the Earth.
Plus many more to explore or to create yourself.
All in all Dr. Geo is an interactive geometry application. It allows one to
create a geometric model you can manipulate according to its
constraints. It is usable at home or at school, in primary or
secondary education level. With the free Desktop version, you can also
construct very elaborated sketches to share with your friends,
students or kids on tablet.
With Dr. Geo you construct:
- free point, mobile point on a curve, intersection point, point at
the middle of two points, or segment middle.
- line, parallel line, perpendicular line, perpendicular bisector,
angle bisector, ray, segment, vector, circle, arc, polygon, locus.
- geometric transformation: symmetry, reflection, translation,
homothety (scale).
- distance between objects, length, coordinates, equations, free text.
- macro-construction: teach Dr. Geo how to construct complex objects
for you.
All Application Badges
Free
downl.
downl.
Android
1.6+
1.6+
Bug
buster
buster
Android app
App History & Updates
What's Changed
New features
Attach a value
Opaque polygon
Input text in a dialog
Text formatted in several lines
Bugs fixes
Tap and not click
Label uneasy to select and move
Slow when creating numerous items
Moving in gridded mode without the grid
Text formatted in several lines
New features
Attach a value
Opaque polygon
Input text in a dialog
Text formatted in several lines
Bugs fixes
Tap and not click
Label uneasy to select and move
Slow when creating numerous items
Moving in gridded mode without the grid
Text formatted in several lines
What are users saying about Dr. Geo free
X
by X####:
by X####:
Opened the app, navigated to the most basic geometric shape, a circle. "You must have the full version for this function" ... A circle!!! Pointless app.
U
by U####:
by U####:
This is really an excellent application not only for students but anyone who is an instructor / teacher or one whose job requires geometrical calculations & in turn expects him to cross check them by constructions
D
by D####:
by D####:
This app is not for your average high school student (even though it can do some awesome 2D and 3D objects). This app is more appropriate for advanced students or researchers interested in exploring the universe of points, lines, circles, polygons, and other 2D or 3D constructs. Very easy and intuitive to use. It also has some nice web tutorials.
U
by U####:
by U####:
While this app does not have a native look and feel, it is quite cool to see that it has all the features of the desktop version. Better be used with a tablet than a phone of course.
Q
by Q####:
by Q####:
Very good app. Better with a large screen
J
by J####:
by J####:
Crashes when starting the app on Kindle Fire HD.
N
by N####:
by N####:
This is really an excellent application not only for students but anyone who is an instructor / teacher or one whose job requires geometrical calculations & in turn expects him to cross check them by constructions
L
by L####:
by L####:
This app is not for your average high school student (even though it can do some awesome 2D and 3D objects). This app is more appropriate for advanced students or researchers interested in exploring the universe of points, lines, circles, polygons, and other 2D or 3D constructs. Very easy and intuitive to use. It also has some nice web tutorials.
N
by N####:
by N####:
While this app does not have a native look and feel, it is quite cool to see that it has all the features of the desktop version. Better be used with a tablet than a phone of course.
O
by O####:
by O####:
Very good app. Better with a large screen
D
by D####:
by D####:
Crashes when starting the app on Kindle Fire HD.
by X####:
Pros: small size, snappy performance, par feature set. Cons: narrow textual buttons, subpar rendering (jagged edges, label placement)