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By using the cosine rule in trigonometry the angles of the triangle can be worked out.

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Q: If the only information given about an oblique triangle is the lengths of the three sides which method should you use to solve for the angles?
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What type of triangle is ABC?

You must have more information about the triangle. If you know the angles, and two of them are equal, it is an isosceles triangle. If all three of the angles are sixty-degrees, it is an equilateral triangle. If none of the angles are the same, it is a scalene triangle. If one of the angles is ninety degrees, it is a right triangle (right triangles may also be scalene or isosceles). If you know the side lengths and two of them are equal, it is isosceles. If they are all equal, it is equilateral. If none of them are equal, it is scalene. A scalene or isosceles triangle may also be a right triangle, which you could determine from side lengths using the pythagorean theorem.


What triangle has a 120 degree angle 35 degree angle and a 25 degree angle?

When a triangle has no angles =to 90 degrees, it is called an oblique triangle.When one of the angles of an oblique triangle is greater than 90 degrees, it can also be called an obtuse triangle.Technically, the triangle described would also be a type of scalene triangle, although we should only call it this when it is defined by the length of its sides, rather than by its internal angles.


What makes a scalene triangle?

A scalene triangle has 3 sides, each with different lengths. the angles do not matter.


To what do the internal angles of a triangle add?

In Euclidean geometry, 180. Other answers are possible, depending on the surface on which the triangle is drawn.


Is it possible for a triangle to have sides with lengths 5cm 7cm and 10cm Explain your answer?

if it is a scalene triangle yes scalene triangle have no congruent sides and angles

Related questions

Is a rhomboid a polygon?

No,but is a parrallogram in which adjacent sides are of unequal lengths and angles are oblique


What is history of theodolite?

From geometry, we know that it is possible to calculate unknown lengths and angles of a triangle given particular information regarding the other angles and lengths of the sides of a triangle. For example, given beginning coordinates such as (x,y) in plane coordinates or the latitude and longitude, it is then possible to calculate new coordinates by measuring certain angles and distances (lengths of sides of a triangle).


Are angles measured by their side lengths?

No. Angles don't have anything called a side length. However, one can use trigonometry to compute the angles of a triangle based on the side lengths of the triangle (triangles do have side lengths).


What is the actual size of an isosceles triangle?

That depends on the given information but an isosceles triangle has two equal side lengths and two equal interior angles.


How do you calculate angles in a scalene triangle?

If you know the lengths of the sides, you can use the cosine rule. If you have information about other aspects of the triangle, then other formulae will apply.


Which triangle has three different lengths and no angels are equal?

It is a scalene triangle that has three different lengths and no angles are equal in size.


What are all the diffent kinds of triangle?

right triangle - has one 90° angle Pythagorean triangle - right triangle whose side lengths are all integers oblique triangle - has no 90° angle acute triangle - each angle is less than 90° obtuse triangle - one angle is greater than 90° equilateral triangle - angles are 60°-60°-60° isosceles triangle - has two equal angles scalene triangle - has three different angles rational triangle - all side lengths are rational integer triangle - all side lengths are integers Heronian triangle - all side lengths and area are integers equable triangle - has a perimeter of n units and and area of n square units degenerate triangle - angles are 0°-0°-180° planar triangle - a triangle drawn on a flat surface (plane) non-planar triangle - a triangle drawn on a curved surface spherical triangle - a non-planar triangle on a convex surface, like the Bermuda Triangle hyperbolic triangle - a non-planar triangle on a concave surface


Difference between oblique and acute triangles?

An oblique triangle is any triangle that is not a right triangle. An oblique triangle could be either obtuse (having one side greater than 90 degrees) or acute. An acute triangle is one with all three angles less than 90 degrees. It cannot be obtuse, or right.


How do you find the short leg of a right triangle?

The answer depends on what information you do have about the triangle: the lengths of the other two sides, or the hypotenuse (longest side) and one of the acute angles, or the other leg and one of the acute angles, etc.


How many side lengths and angles do you to make a triangle?

three


What is the answer for triangle abc?

There can be no answer.First, there is no information on the triangle. Second, what is the question about: do you want the lengths of sides, the perimeter, the measures of angles, the area, the lengths of medians, altitudes, the radius of the incentre, orthocentre, circumcentre. Or do you just want to know what colour it is?


Are trigonometric functions used to find the acute angles of a right triangle?

they can be, depending on the information that you are given. If you know lengths of sides, then YES.