Site Navigation
Categories:
Polygons
Triangles
Triangle geometry

Summary Of: Triangle (geometry)

Encyclodia Page On: Triangle (geometry)

These Are Links To Other Documents
Triangle (disambiguation) | shapes | geometry | polygon | line segments | | Euclidean geometry | collinear | plane | Cartesian space | A triangle. | | equilateral triangle | equiangular polygon | angles | regular polygon | Equilateral Triangle | Isosceles triangle | Scalene triangle | degrees | right triangle | right angle | hypotenuse | obtuse angle | acute angles | Right triangle | Obtuse triangle | Acute triangle | Euclid | Elements | polygon | simplex | polytope | dimensional | exterior angle | convex | triangle inequality | similar | proportional | trigonometric functions | angle | trigonometry | The Pythagorean theorem | | Pythagorean theorem | hypotenuse | complementary | law of cosines | law of sines | Ceva's theorem | concurrent | collinear | Menelaus' theorem | The circumcenter is the center of a circle passing through the three vertices of the triangle. | circumcenter | perpendicular bisector | circumcenter | circumcircle | circle | Thales' theorem | The intersection of the altitudes is the orthocenter. | orthocenter | altitude | orthocenter | orthocentric system | The intersection of the angle bisectors finds the center of the incircle. | incircle | angle bisector | incenter | incircle | excircles | orthocentric system | The intersection of the medians is the centroid. | centroid | median | centroid | center of gravity | Nine-point circle demonstrates a symmetry where six points lie on the edge of the triangle. | Nine-point circle | nine-point circle | orthocenter | Feuerbach point | excircles | Euler's line is a straight line through the centroid (orange), orthocenter (blue), circumcenter (green) and center of the nine-point circle (red). | Euler's line | Euler's line | symmedian | symmedian point | vectors | cross product | dot products | Applying trigonometry to find the altitude h. | trigonometry | Cartesian coordinate system | absolute value | determinant | Pythagorean sum | Heron's formula | spherical triangles | spherical geometry | hyperbolic triangles | hyperbolic geometry | Triangular number | Special right triangles | Fermat point | Hadwiger-Finsler inequality | Pedoe's inequality | Ono's inequality | Lester's theorem | Congruence (geometry) | Pythagorean theorem | Law of sines | Law of cosines | Law of tangents | Triangulation (topology) | manifold | Triangulated category | Inertia tensor of triangle | A-frame for hang gliders, trikes, and ultralights | Eric W. Weisstein | MathWorld | Eric W. Weisstein | MathWorld | Eric W. Weisstein | MathWorld | Eric W. Weisstein | MathWorld | Wikimedia Commons | Geometry from the Land of the Incas | Categories | Polygons | Triangles | Triangle geometry |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Triangle (geometry)".