Dana is attaching a shelf to a wall and needs the shelf to be perpendicular to the wall. How many degrees should the shelf be relative to the wall?
⊥ means 90°
Looks like you need to review right angles
To determine the angle at which the shelf should be relative to the wall to be perpendicular, we need to find the complementary angle of the angle formed by the wall.
In other words, if the angle formed by the wall is θ, then the complementary angle with the shelf should be (90° - θ) degrees.
Therefore, the shelf should be (90° - θ) degrees relative to the wall to be perpendicular.
To determine the angle at which the shelf should be attached to the wall, we need to consider the concept of perpendicularity. Perpendicular lines intersect at a right angle, which is defined as 90 degrees.
To visualize this, imagine the wall as a horizontal line and the shelf as a vertical line. The angle formed between the wall and the shelf should be 90 degrees for the shelf to be perpendicular to the wall.
Therefore, the shelf should be attached to the wall at a 90-degree angle to ensure perpendicularity.