some important results of a triangle 1). if two angles of a triangle are equa, then the sides opposite to equal them are also equal 2). in a triangle the side opposite to greater angle is the longest side 3). the sum of all the three interior angles of a triangle is 180 degree 4). if a side of a triangle is produced then the exterior angle so formed is equal to the sum of the two interior opposite angles.5). an exterior angle of a triangle is greater than either of the interior opposite angles.6). triangle must have at least two acute angles.7). perpendicular is drawn from the attacks of right angle triangle to the hypotenuse then the the triangles on both sides of the perpendicular are similar to the original triangle and also to each other.8). equilateral triangle described on its diagonal.
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