The letter H is symmetric with respect to two different lines, as shown by the dotted lines in the figure above. Which of the following letters is symmetric with respect to at least two different lines?
This question is easy if you can visualize straight lines on the various letters. Imagine a horizontal line going through the center of the letter X - this line produces a mirror image above and below the line. Then, imagine a vertical line also through the center of the letter. Now you have a mirror image to the left and right of the line. This is the only letter (of the choices given) that has two such lines of symmetry, so the correct answer is D.
If you are interested in the symmetry properties of the rest of the alphabet, check out The Symmetry of Capital Letters. Notice the discussion of the letter X at the end of the page.
Our SAT tutors can help you become very proficient with all types of math SAT questions.
State the minimum number of colors and then prove the assertion for the vertices of a K6 graph. ... READ MORE
New Help Center-Knowledge Base
In addition to our Customer Support through Live Chat, Facebook message, and our comprehensive FAQ page, we now have a Help Center/Knowledge base where users can research answers to many common questions and solve many common issues.
If you don.... READ MORE