Maths Olympiad Prep

Library / CEMC Pascal /362 of 603

CEMC Pascal, 1999

Geometry Difficulty 2.0 Junior Find the answer Canada

In the diagram, AD<BCAD < BC. What is the perimeter of ABCDABCD?

(A) 2323 (B) 2626 (C) 2727 (D) 2828 (E) 3030

Figure for this problem

We don't reproduce this publisher's solutions. Their own solution is here — work the problem first.
Want a route through all this instead of an archive? The track puts 2,604 problems in a working order, from Junior Challenge level to the IMO shortlist.

Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.