Question

The triangular shape (at left) is broken into several parts. Choose the correct set of parts from the figures (on the right) to put the triangle together again. 

• A. A
• B. B
• C. C
• D. D

Hint:

When rebuilding a polygon, first ensure the chosen parts can supply all outer sides and corner angles; any piece forcing a curve or a wrong angle on the boundary is automatically excluded.

Answer 1

The Correct Option is A, C, D

Step 1: Match boundary cues.
Pieces must reassemble to the same outer triangle; so the combined outer boundary must be only straight edges meeting at the three corner angles of the given triangle.
Step 2: Test each piece.
(A) and (C) each provide a long straight edge and a corner angle that can sit on two sides of the triangle; their remaining edges match internal cut lines.
(D) supplies the last corner wedge to close the shape.
(B) has an incompatible straight/vertical profile that cannot align with any missing outer side without leaving curvature/angle mismatch; it therefore cannot belong.
Hence the set that reconstructs the triangle is (A)+(C)+(D).