Which quadrilateral looks the same after a half turn but has no line of symmetry?
AIsosceles trapezium
BSlanted parallelogram
COrdinary kite shape
DRhombus, equal sides
Answer & Solution
Correct answer: B. Slanted parallelogram
A parallelogram with unequal sides and no right angles maps onto itself after a half turn, but no fold line matches its halves.
Keep practising Symmetry and data handling
Browse all Symmetry and data handling questions for Olympiad (Class 5), or explore more Mathematics topics.
Related questions
A 10 cm by 6 cm rectangle folds on a line of symmetry parallel to the short sides. New sizThe minute hand of a clock moves from 12 to 6. What part of a full turn has it made?Five numbers have a mean of 8. One of them, 12, is removed. What is the mean of the other The mean age of three children is 10 years. Two of them are 8 and 9 years old. How old is One smiley means 2 visitors. Four days show 3, 4, 5, 6 smileys. Mean visitors per day?A bar chart shows books read by four children: 3, 5, 7 and 9. What is the mean number of bWhich of these is a set of categories well suited to a bar chart?Why should the bars of a chart normally start from zero?