perpendicular – (adjective) at a right angle with (90 degrees) perpendicularly – (adverb) being at a right angle with (90 degrees) thisisbossi Examples: The roof is perpendicular to the two columns. Those two lines aren’t perpendicular, they’re parallel to each other. The cars in the photo on the left-hand side are parked perpendicularly. When the… Continue reading Word to the Wise: perpendicular