삼각형, 사각형, 원의 넓이를 반환하는 lambda 함수 만들기  triangleArea = lambda num1, num2: num1 * num2 / 2squareArea = lambda num1, num2 : num1 * num2circleArea = lambda r: r * r * 3.14width = int(input('가로: '))height = int(input('세로: '))radius = int(input('반지름: '))triangle = triangleArea(width, height)square = squareArea(width, height)circle = circleArea(radius)print(f'삼각형 넓이: {triangle}')print(f'사각형 넓이: {square}'..