adj.等边（腰）的，缩写词为ISOS

The triangle is isosceles, with two sides of equal length.
该三角形为等腰三角形，具有两条等长的边。
In an isosceles triangle, the base angles are congruent.
在等腰三角形中，底角是相等的。
The isosceles trapezoid has two parallel sides and two non-parallel sides that are equal in length.
等腰梯形具有两条平行边和两条等长的非平行边。
The height of an isosceles triangle bisects the base and forms two right triangles.
等腰三角形的高将底边平分，并形成两个直角三角形。
The vertex angle of an isosceles triangle is always greater than its base angles.
等腰三角形的顶角总是大于其底角。
To construct an isosceles triangle, draw two equal line segments and join their endpoints.
构造等腰三角形的方法是画出两条等长线段并连接它们的端点。
The area of an isosceles triangle can be calculated using the formula: A = 1/2 × base × height.
可以使用公式 A = 1/2 × 底 × 高 来计算等腰三角形的面积。
The perimeter of an isosceles triangle is the sum of the lengths of its three sides.
等腰三角形的周长是其三条边长之和。
In an isosceles right triangle, the hypotenuse is twice as long as either leg.
在等腰直角三角形中，斜边长度是任意一条直角边长度的两倍。
The altitude drawn from the vertex of an isosceles triangle to its base is also a median.
从等腰三角形顶点到其底边所作的高线同时也是中线。