Question

question 3 of 10

which of the lines below is a line of symmetry?

a. red
b. yellow
c. neither
d. both

Explanation:

Analyze the vertical dashed line

The vertical dashed line passes straight through the top vertex of the inner triangle and bisects its base. The left and right halves of the entire figure (the concentric circles and the triangle) are identical mirror images across this vertical line.

Analyze the diagonal dashed line

The diagonal dashed line passes from the bottom-left toward the top-right. The parts of the triangle and the circular rings on either side of this diagonal line do not form a symmetric mirror reflection.

Identify the line colors

The vertical line of symmetry is colored red, while the non-symmetric diagonal line is colored yellow. Thus, only the red line is a line of symmetry.

Answer:

• A. Red (Correct answer)
• B. Yellow
• C. Neither
• D. Both