If I had a transit, I could determine that by a vertical angle,––triangulation.
Two of these are equal, while the third, or vertical angle, is longer or shorter.
This simpler proof consists in bisecting the vertical angle, and then proving the two triangles congruent.
If I had a transit, I could calculate the depth at any point where the water shows––triangulate with a vertical angle.
The vertical angle of this feather obviously determines the angle of clearance at which the tool shall stand to the work.
Are we, for example, asked to construct a triangle, being given the base and vertical angle?
The sides of the tank are riveted to a vertical angle iron, the cross section of which is clearly shown in the plan.
Bivalve apparatus; panels of 147 in azimuth and 122 vertical angle; mercury rotation.