260 Index
vector
inverse, 191
norm, 190
null, 191
position, 192
product by a scalar, 188
vector space, 188
vectors
difference, 191
dot product, 190
scalar product, 190
subtraction, 191
sum, 188
vertex
angle, 30
angle- support, 29
convex quadrilateral, 32
vertexandsideintriangle
opposite, 31
vertex of triangle, 31
verticall opposite
angle, 41
Wallace-Simson line, 230
wedge-angle, 30