Answered

Two angles are supplementary. The first angle measures 40°. What is the measurement of the second angle?

A50°
B140°
C120°
D60°


  1. Which of the following best describes a plane?
AThe point of intersection of two walls
BThe edge of a desk
CThe surface of a flat table
DA curve in a road

Verified Answer :

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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