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lapo4ka [179]
3 years ago
15

Part I: Angle Sum Relationships

Mathematics
2 answers:
aalyn [17]3 years ago
5 0

Answer with explanation:

→→The three Angles form a Linear pair.That is

 ⇒∠1+∠2+∠3=180°

→→When these three congruent triangles are joined they form a Trapezoid.

→→Sum of angles in a trangle is given by Angle sum property Axiom of triangle which states that sum of the angles in a triangle is 180°.

mina [271]3 years ago
3 0
The three angles are adjacent to each other.
They appear to form a straight line.
It means that the sum of the three angles of a triangle is appears to be 180 degrees.

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