>> triangle_properties ( 'tex4.txt' ) 18-Jul-2009 20:48:05 TRIANGLE_PROPERTIES: MATLAB version: Determine properties of a triangle. Read the header of "tex4.txt". Spatial dimension DIM_NUM = 2 Number of points NODE_NUM = 3 Read the data in "tex4.txt". Node coordinates: Row: 1 2 Col 1 4.000000 0.000000 2 3.000000 4.000000 3 0.000000 1.000000 ANGLES (radians) 1 1.080839 2 1.030377 3 1.030377 ANGLES (degrees) 1 61.927513 2 59.036243 3 59.036243 AREA = 7.500000 CENTROID: 2.333333 1.666667 CIRCUM_RADIUS = 2.404163 CIRCUM_CENTER: 2.300000 1.700000 EDGE_LENGTHS 1 4.123106 2 4.242641 3 4.123106 IN_RADIUS = 1.201071 IN_CENTER: 2.349286 1.650714 ORIENTATION: CounterClockwise. ORTHO_CENTER: 2.400000 1.600000 QUALITY = 0.999159 TRIANGLE_PROPERTIES: Normal end of execution. 18-Jul-2009 20:48:05 >>