Let’s go through each box one by one and match it with the best concept from the list.
We have this Concept List to choose from:
- congruent angles
- congruent segments
- opposite sides
- diagonal
- is parallel to
- parallelogram
- consecutive angles
- opposite angles
- transversal
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Box 1: ∠A and ∠B
In rectangle ABCD, ∠A and ∠B are next to each other — they share side AB. These are called
consecutive angles. In a rectangle (which is a type of parallelogram), consecutive angles add up to 180°, but even without that, their position makes them “consecutive.”
→ Match:
consecutive angles
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Box 2: ||
This symbol means “is parallel to.” It’s used between lines or segments that never meet and stay the same distance apart.
→ Match:
is parallel to
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Box 3: A parallelogram with a red line connecting two opposite corners
That red line goes from one corner to the opposite corner — that’s the definition of a
diagonal.
→ Match:
diagonal
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Box 4: EF and HG in parallelogram EFGH
Looking at the shape, EF is on top, HG is on bottom. They don’t touch and are across from each other — these are
opposite sides.
→ Match:
opposite sides
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Box 5: ∠H and ∠F in parallelogram EFGH
∠H is at bottom left, ∠F is at top right — they are across from each other. In a parallelogram, these are called
opposite angles.
→ Match:
opposite angles
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Box 6: m∠H = m∠F
This says the measure of angle H equals the measure of angle F. That means the angles are equal in size — so they are
congruent angles.
→ Match:
congruent angles
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Box 7: WX = YZ
This says segment WX has the same length as segment YZ. When two segments have the same length, they are
congruent segments.
→ Match:
congruent segments
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Box 8: □EFGH
The little square symbol before EFGH means it’s a
parallelogram. This is standard notation.
→ Match:
parallelogram
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Box 9: Three horizontal lines cut by a slanted red line with arrows
The red line crosses over the three parallel lines — that’s exactly what a
transversal is: a line that intersects two or more other lines.
→ Match:
transversal
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Final Answer:
1. consecutive angles
2. is parallel to
3. diagonal
4. opposite sides
5. opposite angles
6. congruent angles
7. congruent segments
8. parallelogram
9. transversal
Parent Tip: Review the logic above to help your child master the concept of practice 6 2 properties of parallelograms worksheet answers.
