Which number is the opposite of Point B on the number line?

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

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39

Which best describes the construction of a triangle if given the segment lengths of 2 cm, 3 cm, and 5 cm? a) unique triangle b) cannot be determined c) triangle not possible d) more than one triangle