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Home > INT1S > Chapter 9 > Lesson 9.1.1 > Problem 9-12

9-12.

Para cada uno de los siguientes puntos, determina si los dos triángulos más pequeños de las figuras son congruentes. De serlo, escribe un enunciado de congruencia de triángulos adecuado (no tienes que crear un diagrama de flujo). Luego calcula . Si los triángulos no son congruentes, explica por qué.

Cada conjunto de triángulos es congruente. Ahora, muestra por qué o de qué manera.

  1. A quadrilateral divided into two triangles by a diagonal. The left side is 6 x + 6, the right side is 8 x + 2, and the bottom side is 12 x minus 2. The top and bottom sides are both marked with two tick marks. The alternate interior angles are both marked with one tick mark.

    Congruente por LAL, .

  1. 2 right triangles, arranged so first triangle's right angle is at top left, horizontal leg is 40, vertical leg is 9, second triangle's short leg is right section of first triangle's hypotenuse, its long leg of 40, is right of its hypotenuse of 41, difference of first's hypotenuse & second's short leg, is labeled x.

    Congruente por HC, .

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