Parallelogram Theorems: Quick Check-in

Interact with each app for a minute or two. As you do, be sure to move LARGE POINTS around and be sure to mess with both sliders as well! Please answer the question that comes after each app.

The animation above illustrates which of the following?

选择所有适用项

A
If a quadrilateral is a parallelogram, then both pairs of opposite sides are congruent.
B
If a quadrilateral is a parallelogram, then both pairs of opposite angles are congruent.
C
If a quadrilateral is a parallelogram, then its diagonals bisect each other.
D
Vertical angles are congruent.

检查答案 (3)

The animation above illustrates which of the following?

选择所有适用项

A
If a quadrilateral is a parallelogram, then both pairs of opposite sides are congruent.
B
If a quadrilateral is a parallelogram, then both pairs of opposite angles are congruent.
C
If a quadrilateral is a parallelogram, then its diagonals bisect each other.
D
Vertical angles are congruent.

检查答案 (3)

The animation above illustrates which of the following?

选择所有适用项

A
If a quadrilateral is a parallelogram, then both pairs of opposite sides are congruent.
B
If a quadrilateral is a parallelogram, then both pairs of opposite angles are congruent.
C
If a quadrilateral is a parallelogram, then its diagonals bisect each other.
D
Vertical angles are congruent.
E
If a quadrilateral is a parallelogram, then each diagonal intersects the other diagonal at its midpoint.

检查答案 (3)

Parallelogram Theorems: Quick Check-in

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