
To state: the principal that enables to deduce

Answer to Problem 5WE
The required theorem is,
“If the opposite
Explanation of Solution
Given information:
Given figure,
Given:
Calculation:
From the figure note that,
It is required to state the principal definition or theorem that proves the quadrilateral
From the above, one can note the diagonals of the quadrilateral
Therefore, the required theorem is,
“If the opposite angles of quadrilateral are congruent, then the quadrilateral is a parallelogram”.
Chapter 5 Solutions
McDougal Littell Jurgensen Geometry: Student Edition Geometry
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