Perpendicular is defined as being at what angle to a line, plane, or surface?

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Prepare for the Glencoe Carpentry Exam. Practice with flashcards and multiple-choice questions, each offering hints and explanations. Equip yourself for success on your test day!

Multiple Choice

Perpendicular is defined as being at what angle to a line, plane, or surface?

Explanation:
Perpendicular means forming a right angle with another line, plane, or surface. A right angle is 90 degrees, so when something is perpendicular to a line, plane, or surface, it meets at 90 degrees. In carpentry, this is the standard for a perfectly square corner or joint, and a carpenter’s square is used to verify it. If the angle were 0 degrees, the lines would be parallel; 180 degrees would have them in line but opposite direction; and 45 degrees would be slanted, not at right angles.

Perpendicular means forming a right angle with another line, plane, or surface. A right angle is 90 degrees, so when something is perpendicular to a line, plane, or surface, it meets at 90 degrees. In carpentry, this is the standard for a perfectly square corner or joint, and a carpenter’s square is used to verify it. If the angle were 0 degrees, the lines would be parallel; 180 degrees would have them in line but opposite direction; and 45 degrees would be slanted, not at right angles.

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