Respuesta :

calculista
we know that
if A and B are vertical angles
so
angle A is equal angle B
A=B

and
 if A and B are supplementary angles
so
angle A +angle B is equal to 180 degrees
A+B=180°

therefore
A=B
A+A=180-----> 2A=180-----> A=90°

the answer is
the angles are 90 degrees

Answer:

Step-by-step explanation:

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