'(Sarah of the Clue Crew shows parallel lines on the monitor.)  These two lines are identical in length, but when opposing arrowheads are added, the bottom line appears to be longer in a classic example of this type of eye trick'
an optical illusion
2-WORD SCIENCE TERMS: These two lines are identical in length, but when opposing arrowheads are added, the bottom line appears to be longer in a classic example of this type of eye trick
These two lines are identical in length, but when opposing arrowheads are added, the bottom line appears to be longer in a classic example of this type of eye trick
These two lines are identical in length, but when opposing arrowheads are added, the bottom line appears to be longer in a classic example of this type of eye trick
2-WORD SCIENCE TERMS
an optical illusion
2-WORD SCIENCE TERMS