3 Select the correct answer from each drop-down menu,
С
Points A B and Cform a triangle. Complete the statements to prove that the sum of the interior angles of AABC is 180°
Statement
Reason
Points A, B, and form a triangle.
given
Let De be a line passing through B and parallel to AC. definition of parallel lines
23 25 and 21 24
✓
m21 = m 24 and 23 = m25
m24+ m2 2 + m 25 = 180°
m2 1 + m2 2 + m 23 = 180°
angle addition and definition of a straight line
substitution
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The investiture controversy began as a power struggle between pope gregory vii (1072–85) and henry iv, holy roman emperor (1056–1106).[2] a brief but significant struggle over investiture also occurred between henry i of england and pope paschal ii in the years 1103 to 1107, and the issue played a minor role in the struggles between church and state in france, as well.by undercutting the imperial power established by the salian emperors, the controversy led to nearly 50 years of civil war in germany, and the triumph of the great dukes and abbots. imperial power was finally re-established under the hohenstaufen dynasty. historian norman cantor:

The answer is c) people evacuated but almost all returned

Ctrust me i know its c