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Mathematics, 03.09.2021 08:10 heyrosaphoto2610

The perimeter of triangle ABC is 19. triangle ABD and triangle AEC are formed by joining the vertices of triangle ABC with midpoints of their opposite sides. the perimeter of triangle ABD is smaller by 2 than the perimeter of triangle AEC. what is the length of BC? (please explain your work so I can understand!!!)

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