geometry theorems

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I have six questions which will be on a test two weeks from now, and I do not understand. Help me find out these theorems for the blanks.

1. If one pair of consecutive sides of a parallelogram are congruent, then the parallelogram is a_______?

2. If the diagonals of a parallelogram are _____, then the parallelogram is a rhombus.

3. If a parallelogram is both a _____ and a _____, then the parallelogram is a square.

4. If the ____ of a parallelogram are congruent, then the parallelogram is a rectangle.

5. If one diagonal of a parallelogram bisects a pair of opposite angles, then the parallelogram is a ____.

6. If one angle of a parallelogram is a right angle, then the parallelogram is a _______.

(Thanks for your kindness)
I have down for each.

1. rectangle
2. adjacent
3. rhombus and rectangle
4. sides
5. square
6. rhombus.

Im not sure if any of them are right.

  • geometry theorems -

    1. rhombus
    2. perpendicular
    3. correct
    4. angles
    5. rhombus
    6. rectangle

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