应用实例三：相似三角形判定器知识点：第二十七章《相似》—— 相似三角形的判定。功能：屏幕上方显示标准三角形。下方提供几个备选三角形。学生通过测量角度或边长比，点击符合“AA”、“SAS”或“SSS”判定条件的三角形，正确则高亮显示。interface TriangleData { angles: number[] sides: number[] scale: number } @Entry @Component struct SimilarityChecker { @State private standardTriangle: TriangleData = { angles: [60, 50, 70], sides: [6, 5, 7], scale: 1 } @State private options: TriangleData[] = [] @State private selectedIdx: number = -1 @State private message: string = "点击三角形进行判定" @State private showHint: boolean = false @State private correctIdx: number = 1 abou