9000149307
Level:
B
The rotation through an angle \(\alpha = 180^{\circ }\)
is equivalent to some other geometric mapping. Which one?
reflection through the point
reflection through the line
translation
Symmetry and geometric transformations
9000149308
Level:
B
Consider a rotation through an angle either
\(\alpha = 180^{\circ }\) or
\(\alpha = 360^{\circ }\). How
many lines which are mapped into itself exists for this rotation?
infinitely many
none
one
two
9000149309
Level:
C
Consider a dilatation which maps \(A\)
onto \(B\). The center is
the dilatation is \(S\).
Find a correct statement.
The point \(S\) is on the
line through the points \(A\)
and \(B\).
The points \(S\),
\(A\) and
\(B\) form a right
triangle \(ABS\).
The distance from \(S\)
to \(A\) is smaller than
the distance from \(A\)
to \(B\).
The points \(S\),
\(A\) and
\(B\) form a
triangle \(ABS\)
with at least two sides of equal length.