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Two angles are supplementary. The first angle measures 40°. What is the measurement of the second angle?
A. 50°
B. 140°
C. 120°
D. 60°


6. Which of the following best describes a plane?
A. The point of intersection of two walls
B. The edge of a desk
C. The surface of a flat table
D. A curve in a road

Respuesta :

Ger57
The first answer would be B 140 as supplementary angles add up to 180.

The next answer would be the surface of a flat table.
AL2006

Supplementary angles add up to 180°. 
If one is 40°, then the other is  (180° - 40°)  =  140° .

None of those choices describes a plane. 
Choice 'C' is the only example of a plane.

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