Let’s solve each question one by one, based on the properties of
parallelograms.
---
Question 1:
> The figure is a parallelogram. Solve for x.
> Side GD = 2x – 5, side FE = 17
✔ Property: In a parallelogram,
opposite sides are equal.
So, GD = FE
→ 2x – 5 = 17
Add 5 to both sides:
→ 2x = 22
Divide by 2:
→
x = 11
✔ Answer: B. 11
---
Question 2:
> The figure is a parallelogram. Solve for x.
> Angle Q = 80°, side QR = 14x + 2
Wait — this seems odd. We’re given an
angle and a
side length, but no direct relationship between them unless there's a typo or mislabeling.
But looking at the diagram (even though it’s not visible), in many such problems, if angle Q is 80°, and we're solving for x in a side expression like 14x + 2, it might be that
the side is opposite or adjacent, but
no direct geometric property links an angle to a side length without more info.
However, in many multiple-choice quizzes, if they give an angle and ask to solve for x in a side expression, it’s often a
trick — perhaps the side is meant to be equal to another side? But here, only one side is labeled.
Alternatively — maybe the label “14x + 2” is actually meant to be an
angle? That would make sense.
Let’s assume that
“14x + 2” is meant to be the measure of angle R, not a side. Because in a parallelogram:
✔ Consecutive angles are supplementary (add to 180°)
So if angle Q = 80°, then angle R (adjacent) = 180° – 80° = 100°
Set 14x + 2 = 100
→ 14x = 98
→ x = 7
✔ Answer: C. 7
*(This is the most logical interpretation — likely a labeling error where “14x+2” was meant to be an angle, not a side.)*
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Question 3:
> Parallelograms are ...
✔ A parallelogram is a
four-sided polygon → so it is a
quadrilateral.
- Pentagon = 5 sides
✘
- Hexagon = 6 sides
✘
- Triangle = 3 sides
✘
✔ Answer: B. quadrilaterals
---
Question 4:
> What is the value of x?
> Angle C = 132°, angle A = 2x
In parallelogram ABCD,
opposite angles are equal, and
consecutive angles are supplementary.
Angle C and angle A are
opposite angles (if labeled in order A-B-C-D).
So angle A = angle C → 2x = 132°
→ x = 66
✔ Answer: C. 66
*(Note: If angle A and angle C were consecutive, they’d add to 180°, but since 2x = 132 gives x=66, and 66×2=132, it matches opposite angles being equal.)*
---
Question 5:
> The opposite angles of a parallelogram are ...
✔ Congruent (equal in measure)
- Complementary = add to 90°
✘
- Perpendicular = refers to lines, not angles
✘
- Supplementary = add to 180° — true for *consecutive* angles, not opposite
✘
✔ Answer: B. congruent
---
##
✔ Final Answers:
1.
B. 11
2.
C. 7 *(assuming "14x+2" is an angle, not a side)*
3.
B. quadrilaterals
4.
C. 66
5.
B. congruent
Let me know if you want diagrams or further explanation!
Parent Tip: Review the logic above to help your child master the concept of college geometry worksheet.