Write theorem of sum of measure of all angles of triangle is 180°{statements, diagram, Given, to prove,proof}
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Theorem:
If ABC is a triangle then <)ABC + <)BCA + <)CAB = 180 degrees.
Proof:
Draw line a through points A and B. Draw line b through point C and parallel to line a.
Diagram included :
Since lines a and b are parallel, <)BAC = <)B'CA and <)ABC = <)BCA'.
It is obvious that <)B'CA + <)ACB + <)BCA' = 180 degrees.
Thus <)ABC + <)BCA + <)CAB = 180 degrees.
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Answer:
Phythogorus Therom For Right Angled Triangle
Step-by-step explanation:
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