Triangle Ajnala(g) Amritsar

  • November 2019
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  • Words: 124
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Triangle A

triangle is a plane and closed figure bounded by three line segments.  A vertex of a triangle is a point where any two of its sides meet.  Every triangle has three angles

Types of the triangles  According

to the sides:-Isosceles triangle,equilateral triangle,scalene triangle.  According to the angles:-acute angled triangle, right angled triangle, obtuse angled triangle

Some important results An exterior angle of a triangle is an adjacent and supplementary angle to the corresponding interior angle of the triangle.  An exterior angle of a triangle is always equal to the sum of its two interior opposite angles.  On producing the sides of a triangle , six exterior angles are formed, two at each vertex. Sarbjeet 9th-b 

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