Q:

# What are the side lengths of an isosceles triangle?

A:

An isosceles triangle has two side lengths that are equal and a remaining side that is of a different length. The two interior angles that are opposite these sides are equal to each other. The unequal side length of an isosceles triangle is called the base.

## Keep Learning

When the unequal angle of an isosceles triangle is 90 degrees, it is referred to as a right isosceles triangle. Each equal angle in a right isosceles triangle is equal to 45 degrees.

In an isosceles triangle, the perpendicular distance from the top vertex point to its base is called the altitude. There are different formulas for finding the legs, altitude and base. For example, the formula for finding the equal legs of this triangle is given as L = square root [A^2 + (B/2)^2], where L represents leg, A is altitude, and B stands for the base.

Sources:

## Related Questions

• A: The formula is Area = ½ times (Base times Height) or Area = (Base times Height) divided by 2. Finding the area of an isosceles or right triangle is easy as... Full Answer >
Filed Under:
• A: Find the tangent by dividing the length of the opposite side of a right triangle by the length of its adjacent side. The result of this equation is the tan... Full Answer >
Filed Under:
• A: The law of sines states that, for any given triangle, the ratio of the length of a side divided by the sine of the opposite angle is equal to the same rati... Full Answer >
Filed Under:
• A: The perimeter of a triangle is the sum of all the sides of the triangle, and you determine the perimeter of any triangle by adding the lengths of all three... Full Answer >
Filed Under:
PEOPLE SEARCH FOR