The Vertical Angles Theorem says that a pair of vertical angles are always congruent.
Chat with our AI personalities
Any two angles of a triangle determine the third angle. As a result, the side angle angle theorem is equivalent to the angle side angle theorem.
what is the formula for a vertical angle
A straight angle is an angle of 180 degrees
The answer depends on which angle is given: whether it is the angle made by the sloping face with the base, or the angle at the apex or even the angle that the sloping face makes with the vertical. Essentially, though, you use Pythagoras's theorem or, equivalently, the sine rule.
The Pythagorean theorem is actually the law of cos, where the angle is 90.