Esteemed reader: Appended to problem #42 is a dialogue highlighting an unsettling outcome of a limited (and limiting) approach to mathematics education.

2014-11-19

202. Folded rectangular strip

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A rectangular strip of paper is folded over, as shown.  Determine ∠x.

2014-11-18

201. Table of integers


In the table are integers that follow a particular rule.  For example, in Row 2 (R2), Column 4 (C4) is the integer 15.

⒜  Determine the integer in Row 1, Column 10.
⒝  For the integer 200, determine its row and column.

2014-11-17

200. Five in six



In the diagram, a regular hexagon and a regular pentagon share one side.  Determine ∠①.