Triangle angle sum theorem proof

 

 

 

Triangle Angle Sum Theorem Proof, Triangle Angle Sum Theorem, Triangle Sum Theorem, Angles of Triangle Proof, Angle Sum Theorem Proof, Angle Sum Theorem, Triangle Angles, Triangle Sum, Triangles and Angles,

Statement:
  A triangle with the interior angles MNS.

To prove:

Diagram



Construction:


Proof:


MN is a transversal.


Similarly,
--->(2)

(is a straight line and sum of the angles at M is equal to 180.

From (1) and (2), We get


The measure of interior angles of a triangle or the two right angles are equal to 180 degrees.

Triangle angle sum theorem proof

Triangle Angle Sum Theorem Proof, Triangle Angle Sum Theorem, Triangle Sum Theorem, Angles of Triangle Proof, Angle Sum Theorem Proof, Angle Sum Theorem, Trian

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2024-05-08

 

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