Triangle

	Introduction
	A triangle is a geometrical figure formed by three lines, which intersect each other and which are not all concurrent.
	Triangle
	A three sided closed figure is called a triangle. Here side means a line segment.
	Classification of Triangles
	According to Angles : If one angle of a triangle is a right angle, then it is called a right angled triangle.
	Some Important Definitions
	Median : In a triangle, a line joining the midpoint of a side to the opposite vertex is called a median.
	Theorem
	Sum of the angles of a triangle is equal to two right angles.
	Summary
	In a triangle the line joining a vertex to the mid point of the opposite side is called a median. The three medians of a triangle are concurrent at a point called the "Centroid".
	Question and Answers 1
	Question and Answers 2

Triangles

	Introduction
	Triangle
	Classification of Triangles
	Some Important Definitions
	Theorem
	Summary
	Question and Answers 1
	Question and Answers 2

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