the choices are
a) the composition of an odd number of line reflections
b) a point reflection
c) a glide reflection
d) a line reflection
o and explain why, please and thank you
2006-12-30 12:38:46 · 3 answers · asked by adel q 2 in Science & Mathematics ➔ Mathematics
The answer is b, because any line reflection reverses the orientation which causes an opposite isometry. Two successive line reflections (or any even number of them) would be direct. A glide reflection includes one line reflection (plus a translation).
2006-12-30 13:47:22 · answer #1 · answered by hayharbr 7 · 0⤊ 0⤋
the answer is D, its the straight line because it is direct isometry. Check out the wikipedia site on isometry
2006-12-30 13:06:59 · answer #2 · answered by Andrew B 1 · 0⤊ 1⤋
hayharbr is right, the answer is b) a point reflection, which preserves distances and order, being equivalent to a 180 degree rotation.
2006-12-30 14:49:33 · answer #3 · answered by Scythian1950 7 · 0⤊ 0⤋