' Programmed by John Paul Pruess.
' Completed on July 18th, 1997.
'
' Some source taken from Harper & Row
' Geometry by Max A. Sobel, pub. Scribner
' Laidlaw, NY.

CLS                           ' Clears the screen.

10 PRINT "First angle";
20 INPUT A
30 IF A > 180 THEN 10
40 PRINT "Second angle";
50 INPUT B
60 IF (A + B) > 180 THEN 40
70 LET C = 180 - (A + B)
80 PRINT "Third angle = "; C

END                           ' End of program.