1. Let’s define what the degree measure of another angle is equal to.
180 – 70 = 110 °.
2. The bisector drawn from the vertex of the angle divides this angle in half. This means that the new ones are 1/2 of the former, that is, one 70/2 = 35 °, the other 110/2 = 55 °. Hence, the bisectors formed an angle of 35 + 55 = 90 °.
Answer: 90 °.
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