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How do you find the length of one side of a triangle given the length of the other two sides?
Wiki User
∙ 12y ago
You need to know the included angle before this can be calculated.
Actually,
- Regular Triangles
- 1
Use the Pythagorean theorem for right triangles in which two sides are given. (This theorem is A^2 + B^2 = C^2. A and B are regular sides, and C is the hypotenuse.) If you're trying to find the hypotenuse, square the other sides, add them together and take the square root. If you're trying to find a side other than the hypotenuse, square the side given, subtract it from the hypotenuse squared, and take the square root of the answer.
- 2
Recognize that an equilateral triangle has three equal sides. Therefore, if one side is given, the other two are the same measurement.
- 3
Recognize that an isosceles triangle has two equal sides and two equal angles. Therefore, if the length of one of the equal sides is unknown, you can deduce that the other side is the same length as the similar side given.
- 1
Begin using the law of cosines by multiplying the squares of two given sides. The product you get will be needed in a later step.
- 2
Multiply the two given sides. (Do not square them.)
- 3
Multiply the answer from step 2 by 2.
- 4
Multiply the answer from step 3 by the cosine of the angle opposite the unknown sides. (Use a calculator with trigonometry functions to find the cosine of this angle.)
- 5
Subtract the answer from step 4 from the answer you obtained in step 1.
- 6
Take the square root of the answer from step 5 to find the measurement of the unknown side.
- 1
There you have it!
Wiki User
∙ 12y ago
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How do you find the length of the other two sides of a triangle when given a hypotenuse?
Unless you are given atleast 2 other angles, there is no way to find them out.
How many equal sides does and an isosceles triangle have?
An isosceles triangle has 2 sides of equal length. The other two types are scalene (with no sides of equal length) and equilateral (with all sides equal in length)
What is a triangle in which 2 sides are the same length?
An isosceles triangle is a triangle with two sides of equal length.
How are isosceles and scalene different?
An isosceles triangle has two sides that are equal length, and the other side would be a different length. A right triangle could be an isosceles triangle. On the other hand, a scalene triangle has all of its sides different lengths.
Does a scalene triangle have no sides of the same length?
No sides of a scalene triangle are the same length.
How do you find the length of the other two sides of a triangle when given a hypotenuse?
Unless you are given atleast 2 other angles, there is no way to find them out.
How do you describe the possible lengths of the third side of a triangle when the other tw sides are given?
The length of the third side must be greater than the difference between the length of the two given sides and it must be less than the sum of the two given sides. These limits can be derived from the fact that any two sides of a triangle must have a combined length greater than the third side.
What can you solve in the Pythagorean theorem?
Given the lengths of two sides of a right triangle, you can find the length of the other side.
How do you find the perimeter of a triangle when all three sides are given?
If you have the length of each of the three sides of a triangle, you can find the perimeter of (the distance around) the triangle by adding the length of the sides. Their sum will be the perimeter of this geometric shape.
What is the name given to a triangle with sides of equal length?
equal lateral
How many equal sides does and an isosceles triangle have?
An isosceles triangle has 2 sides of equal length. The other two types are scalene (with no sides of equal length) and equilateral (with all sides equal in length)
What is a triangle with two sides of equal length?
An isosceles triangle is a triangle that has two sides of equal length.
What is a triangle in which 2 sides are the same length?
An isosceles triangle is a triangle with two sides of equal length.
What is an isosceles and scalene?
They are triangles. An isosceles triangle has two sides that are equal length, and the other side would be a different length. A right triangle could be an isosceles triangle. On the other hand, a scalene triangle has all of its sides different lengths.
How are isosceles and scalene different?
An isosceles triangle has two sides that are equal length, and the other side would be a different length. A right triangle could be an isosceles triangle. On the other hand, a scalene triangle has all of its sides different lengths.
What is the difference between an isosceles trapezoid and an isosceles triangle?
An Isosceles trapezoid has four sides (is a quadrilateral) with a pair of parallel sides and the other two sides of equal length; whereas An isosceles triangle has three sides with a pair of sides of the same length and the other side a different length.
What type of triangle has two sides the same length?
If only two sides of a triangle are the same length it is an isosceles triangle. If all three sides are the same length it is an equilateral triangle.
