1. Determina el recíproco: "Si los 3 ángulos de un triángulo son iguales, entonces el triángulo es isosceles". Escribe el reciproco, demuestra si se cumple o proporciona
un contraejemplo si no se cumple.
2. Determina el reciproco: "En el triángulo ABC, si AB = AC y AD es bisectriz de CAB
entonces AD es mediatriz de BC". Escribe el recíproco, demuestra si se cumple o
proporciona un contraejemplo si no se cumple.
B

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −