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Definition of Obtuse Triangle  Math is Fun
Math explained in easy language, plus puzzles, games, quizzes, videos and worksheets. For K12 kids, teachers and parents.
http://www.hbschool.com/glossary/math2/index6.html
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Triangle Types and Classifications: Isosceles, Equilateral ...
Triangles can be classified by various properties relating to their angles and sides. The most common classifications are described on this page.
Triangles  Equilateral, Isosceles and Scalene
Why is the Area "Half of bh"? Imagine you "doubled" the triangle (flip it around one of the upper edges) to make a squarelike shape (a parallelogram) which can be changed to a simple rectangle:. THEN the whole area is bh, which is for both triangles, so just one is ½ × bh.
How to construct (draw) the orthocenter of a triangle ...
How to construct the orthocenter of a triangle with compass and straightedge or ruler. The orthocenter is the point where all three altitudes of the triangle intersect. An altitude is a line which passes through a vertex of the triangle and is perpendicular to the opposite side. A Euclidean construction
Triangle  Wikipedia
A triangle is a polygon with three edges and three vertices.It is one of the basic shapes in geometry.A triangle with vertices A, B, and C is denoted .. In Euclidean geometry any three points, when noncollinear, determine a unique triangle and simultaneously, a unique plane (i.e. a twodimensional Euclidean space).In other words, there is only one plane that contains that triangle, and every ...
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Obtuse angle  Define Obtuse angle at Dictionary.com
Obtuse angle definition, an angle greater than 90° but less than 180°. See more.
Online Triangle Calculator. Enter any valid values and ...
Math Warehouse's popular online triangle calculator: Enter any valid combination of sides/angles(3 sides, 2 sides and an angle or 2 angle and a 1 side) , and our calculator will do the rest! It will even tell you if more than 1 triangle can be created.
For the Geometric Cabinet (I’ve provided triangle labels ...
isosceles triangle equilateral triangle rightangled triangle scalene triangle acute triangle obtuseangled scalene triangle rightangled scalene triangle
