Properties of a parallelogram
Properties of a parallelogram.
- Use the stated properties and diagram markings, rather than judging by appearance.
- Matching ticks mean equal lengths; matching arrows mean parallel lines.
- A small square marks a right angle. Keep labels horizontal and include units.
Example 1
The diagram is a parallelogram. Find the unlabelled side lengths and state a useful angle property. All lengths are in cm.
Opposite sides are equal and parallel; opposite angles are equal.
Example 2
The diagram is a parallelogram. Find the unlabelled side lengths and state a useful angle property. All lengths are in cm.
Opposite sides are equal and parallel; opposite angles are equal.
Your turn
The diagram is a parallelogram. Find the unlabelled side lengths and state a useful angle property. All lengths are in cm.
Check answer
Opposite sides are equal and parallel; opposite angles are equal.
The diagram is a parallelogram. Find the unlabelled side lengths and state a useful angle property. All lengths are in cm.
Check answer
Opposite sides are equal and parallel; opposite angles are equal.
The diagram is a parallelogram. Find the unlabelled side lengths and state a useful angle property. All lengths are in cm.
Check answer
Opposite sides are equal and parallel; opposite angles are equal.
The diagram is a parallelogram. Find the unlabelled side lengths and state a useful angle property. All lengths are in cm.
Check answer
Opposite sides are equal and parallel; opposite angles are equal.
The diagram is a parallelogram. Find the unlabelled side lengths and state a useful angle property. All lengths are in cm.
Check answer
Opposite sides are equal and parallel; opposite angles are equal.
The diagram is a parallelogram. Find the unlabelled side lengths and state a useful angle property. All lengths are in cm.
AnswerOpposite sides are equal and parallel; opposite angles are equal.
The diagram is a parallelogram. Find the unlabelled side lengths and state a useful angle property. All lengths are in cm.
AnswerOpposite sides are equal and parallel; opposite angles are equal.
The diagram is a parallelogram. Find the unlabelled side lengths and state a useful angle property. All lengths are in cm.
AnswerOpposite sides are equal and parallel; opposite angles are equal.
The diagram is a parallelogram. Find the unlabelled side lengths and state a useful angle property. All lengths are in cm.
AnswerOpposite sides are equal and parallel; opposite angles are equal.
The diagram is a parallelogram. Find the unlabelled side lengths and state a useful angle property. All lengths are in cm.
AnswerOpposite sides are equal and parallel; opposite angles are equal.