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# What are some geometry formulas for triangles?

A triangle is a three-sided polygon where the sum of its interior angles equals 180 degrees. Some common formulas for triangles include perimeter, the total sum of its individual side lengths; area, one-half of the product of a triangle’s base and height; and angle calculations based on the Pythagorean Theorem.

Continue ReadingThe Pythagorean Theorem states that the side lengths of a right triangle follow the pattern a squared + b squared = c squared, where a and b represent the triangle’s two shorter sides and c represents the triangle’s hypotenuse.

From this relationship, a set of trigonometric functions emerges to describe the geometric connections among the triangle's side lengths and interior angles. Commonly known as SOHCAHTOA, these relationships are: sine (angle) = opposite/hypotenuse; cosine (angle) = adjacent/hypotenuse; and tangent (angle) = opposite/adjacent.

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## What does a triangle represent?

A: In geometry, the triangle is a polygon that has three sides. There can be different types of triangles, but the sum of the three angles in this polygon is ... Full Answer >Filed Under: -
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## What are the properties of a trapezium?

A: The properties of a trapezium are that it has four sides, none of which are parallel; the sum of its angles equals 360 degrees; and any three sides are gre... Full Answer >Filed Under: -
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## What is a concave polygon?

A: According to Math Open Reference, a concave polygon refers to a polygon or a plane figure that has one or more interior angles that measure greater than 18... Full Answer >Filed Under: -
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## What are the 30-60-90 triangle rules?

A: A 30-60-90 triangle has interior angles equal to 30, 60 and 90 degrees. This is always a right triangle with the 90-degree angle located opposite the longe... Full Answer >Filed Under: