# vertical angle

noun, Geometry
1.
one of two opposite and equal angles formed by the intersection of two lines.
Origin of vertical angle
1565-1575
1565-75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for vertical angle
Historical Examples
• Bivalve apparatus; panels of 147 in azimuth and 122 vertical angle; mercury rotation.

• Two of these are equal, while the third, or vertical angle, is longer or shorter.

Charles A. Bramble
• The sides of the tank are riveted to a vertical angle iron, the cross section of which is clearly shown in the plan.

David Allan Low
• This simpler proof consists in bisecting the vertical angle, and then proving the two triangles congruent.

David Eugene Smith
• The vertical angle of this feather obviously determines the angle of clearance at which the tool shall stand to the work.

• If I had a transit, I could calculate the depth at any point where the water shows––triangulate with a vertical angle.

Robert Ames Bennet
• If I had a transit, I could determine that by a vertical angle,––triangulation.

Robert Ames Bennet
• Are we, for example, asked to construct a triangle, being given the base and vertical angle?

Immanuel Kant

### Difficulty index for vertical angle

Few English speakers likely know this word

### Word Value for vertical

13
16
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