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Sagot :
Answer with Step-by-step explanation:
Congruent and equal are synonymous.
Properties of parallelogram that applies to the Questions 1 - 4, Part 1:
- Opposite sides are congruent.
- Opposite angles are congruent.
- Pairs of consecutive angles are supplementary. The sum of their measures is 180°. They are equal if and only if the parallelogram is a square or rectangle whose angles are all 90°.
- Segments of a diagonal are congruent because diagonals of parallelogram bisect each other. Each diagonal divides the other into two congruent segments.
First Part:
1) Congruent
2) Congruent
3) Not Congruent
The pairs of consecutive angles are supplementary. Consecutive angles share the same side (included side).
4) Congruent
Second Part:
1.) Opposite sides measurement were both 7 inch, and both 9 inch.
Proof: Opposite sides of a parallelogram are congruent.
Let's say, in parallelogram ABCD, the opposite sides are:
- AB and CD; AB = 7 inches, then CD = 7 inches; AB ≅ CD
- AD and BC; AD = 9 inches, then BC = 9 inches; AD≅ AD
2.) A parallelogram which has 130° and 50° angles.
Proof: Consecutive angles of a parallelogram are supplementary.
130° + 50° = 180° (Supplementary angles total measure is 180°)
See attached image for illustration.

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