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How do you find the length of the third side of an isosceles triangle?
Wiki User
∙ 16y ago
Using the angle (we'll call it theta) opposite the unknown side, you can find its length following this technique:
1. Draw a line from that angle to the midpoint of the unknown side, we'll call it B. This should be perpendicular to that side.
2. You have just formed two right triangles within your isosceles triangle. The hypotenuse of the right angle is your known side, we'll call it A.
3. Your angle theta has now been split in half. Calculate sin(theta/2).
4. Now you have: sin(theta/2) = (B/2)/A [Remember, sine = opposite over hypotenuse.]
5. Rearrange the equation to find B and plug in your numbers: B = 2A*sin(theta/2)
Wiki User
∙ 16y ago
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How can you find the length of the 2 sides of an isosceles triangle when you know the base and the height?
By using Pythagoras' theorem.
Find the length of the hypotenuse of an isosceles right triangle with legs of 5 feet each?
(25.)-3.14(x+m)(4x6)
Find the area of an isosceles right triangle that has one leg of length 12 cm?
Unfortuantly with the given information the question is unable to be answered.
If a triangle is equilateral then it is isosceles What is the converse of the statement?
If a triangle is isosceles, then it is equilateral. To find the converse of a conditional, you switch the antecedent ("If ____ ...") and consequent ("... then ____."). (Of course, if not ALL isosceles triangles were equilateral, then the converse would be false.)
How do you find the area of an isosceles triangle with a base of length 10 cm and congruent sides of length 13 cm?
Use Pythagoras to find the perpendicular height of the triangle: 132-52 = 144 and the square root of this is the height of the triangle which is 12 cm Area = 1/2*12*10 = 60 square cm
How do you find the side of an isosceles triangle?
An isosceles triangle has 3 sides 2 of which are equal in length
How do you find the volume of a 3D isosceles triangle?
V= area of the triangle x length
What is the length of the longest side in an isosceles right triangle?
The longest length would be the hypotenuse. You can use SOHCAHTOA to find the length.
How do you find height of isosceles triangle if you only know the length of equal sides and the base?
i can
Find the length of the hypotenuse of an isosceles right triangle whose legs are 1 unit in length?
square root of two.
How do you find the area of an isosceles triangle with a base of length 7 cm and congruent sides of length 6 cm?
7X6/2
Find length of the base if perimeter of an isosceles triangle is 70 in?
That's not enough information to solve the problem.
How can you find the length of the 2 sides of an isosceles triangle when you know the base and the height?
By using Pythagoras' theorem.
Why can equilateral triangle called an isosceles?
That's because it is possible to find two sides that have the same length.
How do you find the height of an isosceles triangle when given only the three side lengths?
Make it a right triangle where one side of the right triangle is half the length of the non-identical side of the isosceles, the hypotenuse of the right triangle is the length of one of the identical sides of the isosceles triangle, then use the Pythagorean theorem. a^2+b^2=c^2. Where "a" is the length of one of the identical sides, and "c" is the length of half the non-identical sides. Solve for "b" and that is your height.
How do you find the area of an isosceles tringle?
To find the area of any triangle... divide the length of the base by 2... then multiply the result by the height.
Find the length of a leg of an isosceles right triangle whose hypotenuse measures 8 radical 2?
the answer is 8
