Mathematics, 22.02.2021 18:10, lulabelles7750

Points A, B, and form a triangle. Complete the statements to prove that the sum of the interior angles of AABC IS 180°. Reason
Statement
Points A, B, and C form a triangle.
Let DE be a line passing through Band parallel to AC
given
definition of parallel lines
23 – 25 and 21 = 24
m21 = m 24 and 23 = m 25
m24+ m2 2 + m25 = 180°
angle addition and definition of a straight line
substitution
m21 + m2 2 + m23 = 180°
No

Points A, B, and form a triangle. Complete the statements to prove that the sum of the interior ang

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Points A, B, and form a triangle. Complete the statements to prove that the sum of the interior angl...