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Definition and properties of isosceles triangles ... Try this Drag the orange dots on each vertex to reshape the triangle. Notice it always remains an isosceles triangle, the sides AB and AC always remain equal in length...
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www.mathopenref.com/isosceles.html
www.mathopenref.com/isosceles.html
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A triangle with two congruent sides ; Example:;
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www.hbschool.com/glossary/math2/define/gr5/isosceles_tr...
www.hbschool.com/glossary/math2/define/gr5/isosceles_triangle5.html
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An important fact to know is that an isosceles triangle is a triangle in which two of its sides are equal in length. Thus, once you know which two sides are congruent, then the angles opposite them, respectively, are equal in measure.
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www.geom.uiuc.edu/~dwiggins/conj13.html
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Triangle - Wikipedia, the free encyclopedia
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A triangle is one of the basic shapes of geometry: a polygon with three corners or vertices and three sides or edges which are line segments. A triangle with vertices A , B , and C is denoted ...
en.wikipedia.org/wiki/Triangle
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An isosceles triangle is a triangle with two congruent sides. The angles opposite these two sides are the base angles and the angle between those sides is the vertex angle of the triangle. ... In any isosceles triangle, the angles opposite to the congruent sides are also congruent. In fact, this condition could be used to...
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planetmath.org/encyclopedia/Isosceles.html
planetmath.org/encyclopedia/Isosceles.html
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In the figure, ABD is an isosceles triangle with AB = BD. ... We also see the ratio of AF / FD. Can you come up with a formula for this ratio in terms of AB, AD and AE? ... Learn more about this Isosceles Triangle Theorem in our Geometry Formula Atlas...
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www.saltire.com/applets/advanced_geometry/isosceles_the...
www.saltire.com/applets/advanced_geometry/isosceles_theorem_executable/isosceles_theorem.htm
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Drag point C to change the base and height of isosceles ΔABC. The length of the base and the area of the triangle will be recalculated as the triangle is modified; additionally, a trace will be created by the movement of point L, which shows a graph of the area as a function of BC.
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illuminations.nctm.org/ActivityDetail.aspx?ID=88
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First, you must recall the definition of an isosceles triangle. An isosceles triangle is a triangle that has two sides of the same length. It is possible to use algebra to determine whether a triangle is isosceles if you know the coordinates of the three vertices and if you know the distance formula.
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www.mhhe.com/math/devmath/aleks/wt-ia/student/olc/graph...
www.mhhe.com/math/devmath/aleks/wt-ia/student/olc/graphics/author_ed/chp3sec24.htm
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