Polygons

On the Subject of Polygons

People often say that you don’t need geometry in the real world. Those people are now blown up.

See Appendix BLANK in Blind Alley for blank modules identification.

Feel the module to obtain four shapes. Determine whether each shape’s condition in the table below is true or false. Touch the shape whose truth value is different from the other three.

Note: the shapes are rotated about the module’s center. The shape at the top position has the same orientation as this manual. The one on the right is rotated 90° clockwise, and so on.

	The serial number contains a vowel.
	The serial number does not contain a vowel.
	The serial number’s last digit is even.
	An RJ-45 port is present.
	An MSA indicator is present.
	The number of batteries is even.
	A parallel port is present.
	A Stereo RCA port is present.

	The number of indicators is even.
	A TRN indicator is present.
	The serial number’s last digit is odd.
	A DVI port is present.
	The number of indicators is odd.
	A BOB indicator is present.
	There is a lit indicator that shares a letter with the serial number.
	An SND indicator is present.

	The bomb was started on a weekend (Saturday or Sunday).
	An FRK indicator is present.
	There is an unlit indicator that shares a letter with the serial number.
	A CLR indicator is present.
	A “Blind Alley”, “Tap Code”, “Braille” or “A Mistake” module is present.
	An NLL indicator is present.
	An empty port plate is present.
	A CAR indicator is present.
	An NSA indicator is present.

	A PS/2 port is present.
	An FRQ indicator is present.
	The number of battery holders is even.
	An IND indicator is present.
	The number of ports is even.
	A serial port is present.
	The number of batteries is odd.
	The number of ports is odd.
	A SIG indicator is present.
	The number of battery holders is odd.