Assinale todas as assertivas corretas com relação aos princípios de ensino na Matemática.
1 answer:
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Answer:
Step-by-step explanation:
we know that
The incenter of a triangle is the meeting point of the three angle bisectors of a triangle.
so
we have
-----> given problem
so
Remember that
In a triangle the sum of the internal angles must be equal to
so
In the right triangle OQB
substitute