Well, honey, the third side of a triangle must be greater than the difference of the other two sides and less than the sum of the other two sides. So, the least possible length of the third side would be 8 + 15 - 1 = 22 cm. But remember, triangles are like relationships - they have rules to follow!
Chat with our AI personalities
The way you can work out the length of a triangle is if you are given the height and the area of that triangle ( this works of you don't want to measure it) or you could just measure it.
isosceles triangle
You can find it by using the Pythagorean theorem if you know the side and the base of triangle. In an isosceles triangle the median is also the altitude. The formula is: (The measure of the side length)^2 - (The measure of the one half of the base length )^2 = (The measure of the altitude)^2. Find the square root of the result that you'll have the measure of the altitude.
The length of the hypotenuse of a right triangle with legs of 7 cm and 24 cm is: 25 cm
-- Measure or calculate the length of one side. -- Measure or calculate the length of another side. -- Measure or calculate the length of the only remaining side. -- Add the three numbers. The sum is the perimeter of the triangle. ----------------------------------- The perimeter is the sum of all three sides. Sometimes it is unnecessary to compute each side length; all we care about is the sum.