help me, please.........
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Answer:
Step-by-step explanation:
an altitude - a ( forms with a line an angle of 90 degrees)
a perpendicular bisector- c ( divide the line in 2 equal parts and it is perpendicular on the line)
an angle bisector - d ( divide the angle in 2 equal parts)
a median - b ( a segment between an angle and the middlepoint of the opposite line)