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# What Are Congruent Angles?

**Two angles are congruent if they have the same degree of angle.** For example, two 110-degree angles would be congruent even if they didn't point the same direction or had different lengths of lines. The word "congruent" comes from the Latin word "congruere," which actually means "to agree."

An angle can be categorized based on its degree of measurement. For example, an acute angle is less than 90 degrees, while a right angle is exactly 90 degrees. An obtuse angle will be more than 90 degrees but measure less than 180, while a straight angle measures 180 degrees. Any two angles that share the same degree of measurement will be congruent.

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## What Are Coterminal Angles?

A: Coterminal angles are angles in standard position that share the same terminal side. To find a coterminal angle, simply add or subtract 360 degrees from an... Full Answer >Filed Under: -
Q:
## When Was Trigonometry Invented?

A: Ancient Egyptian and Greek philosophers used an early form of trigonometry that involved calculating chords to obtain the angles of a triangle. This method... Full Answer >Filed Under: -
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## What Is the Law of Sines and Cosines?

A: The law of sines and law of cosines are two different equations relating the measure of the angles of a triangle to the length of the sides. The laws apply... Full Answer >Filed Under: -
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## How Is Trigonometry Used in Physics?

A: Because it has such a strong ability to explain space and the relationships between angles, trigonometry is used in almost every branch of modern physics, ... Full Answer >Filed Under: