Question

Choose the set of operations (not necessarily in order) that can be applied on form A to obtain form B.

• A. Cut vertically, Taper, Cut at an angle, Bend, Twist
• B. Cut horizontally, Bend, Cut at an angle, Taper, Twist
• C. Cut vertically, Stretch, Twist, Bend, Cut at an angle
• D. Cut vertically, Twist, Stretch, Cut at an angle, Fold

Hint:

From a prismatic block, think: longitudinal cut to free a strip/shell \(⇒\) taper the section \(⇒\) apply twist along the length \(⇒\) bend the axis \(⇒\) finish with an angled cut for a slanted mouth.

Answer 1

The Correct Option is A

Read shape cues in B and map to operations:
(i) Twist present. The surface shows helical seams—this requires a Twist.
(ii) Overall curvature. The long axis is bowed—this needs a Bend.
(iii) Tapered thickness/width. The section narrows toward one end—this implies a Taper.
(iv) Slanted mouth. The top opening is not perpendicular to the axis—this comes from a Cut at an angle.
(v) Long seam to enable twist. Starting from a solid prismatic block (A), a continuous vertical cut creates a strip/shell or releases material so that twisting without fracture is feasible (a common modeling step for ribbon-like outcomes).
[2pt] Eliminate alternatives:
(B) uses a horizontal cut—that produces disks/slices, not the needed longitudinal seam; it cannot explain the helical side seam.
(C) and (D) include Stretch/Fold, which are not evidenced in B (no elongation proportion change from A, no crease).
Hence the only consistent set is \(\boxed{(A)}\).