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Points d and e are midpoints of the sides of triangle abc. the perimeter of the triangle is 48 units. what is the value of t? ο ο ο ο 7t +

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons