Add to ORKGAreaThe black central triangle with one angle equal to 60° is called a eutrigon. The areas of equilateral triangles constructed on the three faces , and, obey the eutrigon theorem, giving the area of the black triangle in terms of the other three trianglesComponente Curricular::Ensino Fundamental::Séries Finais::Matemátic
noneA triangle is: acute if all of its angles are less than 90°; right if one of its angles is 90°; ...
Euler’s formula for the area of a pedal triangle Given a triangle ABC and a point P in the plane of...
International audienceWe start by recalling the classical theorem of Girard on the area of a spheric...
AreaThe black central triangle with one angle equal to 60° is called a eutrigon. The areas of equila...
Knowledge about area, plane geometry and trianglesThe medians of a triangle divide the triangle into...
summary:Many propositions about triangles are discussed in the school mathematics. There are formula...
Knowledge about plane geometry and polygonsAs the number of sides in an equilateral figure increases...
Knowledge about plane geometry and trianglesConstruct squares on the sides of the triangle ABC. Join...
Knowledge about plane geometry and polygonsThe midpoints of the sides of any quadrilateral form a pa...
noneThe area of a triangle is equal to half the area of a rectangle with the same base and altitudeC...
This thesis on trisection triangle shows that when each vertex of a triangle is connected to the fir...
Let ABC be a triangle with excenters A', B', and C' opposite A, B, and C, respectively. Let A'', B''...
Pythagoras ’ theorem, Euclid’s formula for the area of a triangle as one half the base times the hei...
noneThe top two sliders choose lengths of the legs of the right triangle. The third slider converts...
Let ABC be an acute triangle with area T. Extend the altitudes of ABC to meet the circumcircle at A'...
noneA triangle is: acute if all of its angles are less than 90°; right if one of its angles is 90°; ...
Euler’s formula for the area of a pedal triangle Given a triangle ABC and a point P in the plane of...
International audienceWe start by recalling the classical theorem of Girard on the area of a spheric...
AreaThe black central triangle with one angle equal to 60° is called a eutrigon. The areas of equila...
Knowledge about area, plane geometry and trianglesThe medians of a triangle divide the triangle into...
summary:Many propositions about triangles are discussed in the school mathematics. There are formula...
Knowledge about plane geometry and polygonsAs the number of sides in an equilateral figure increases...
Knowledge about plane geometry and trianglesConstruct squares on the sides of the triangle ABC. Join...
Knowledge about plane geometry and polygonsThe midpoints of the sides of any quadrilateral form a pa...
noneThe area of a triangle is equal to half the area of a rectangle with the same base and altitudeC...
This thesis on trisection triangle shows that when each vertex of a triangle is connected to the fir...
Let ABC be a triangle with excenters A', B', and C' opposite A, B, and C, respectively. Let A'', B''...
Pythagoras ’ theorem, Euclid’s formula for the area of a triangle as one half the base times the hei...
noneThe top two sliders choose lengths of the legs of the right triangle. The third slider converts...
Let ABC be an acute triangle with area T. Extend the altitudes of ABC to meet the circumcircle at A'...
noneA triangle is: acute if all of its angles are less than 90°; right if one of its angles is 90°; ...
Euler’s formula for the area of a pedal triangle Given a triangle ABC and a point P in the plane of...
International audienceWe start by recalling the classical theorem of Girard on the area of a spheric...