How many angles must be supplementary with angle 14? 4 lines intersect to form 16 angles. The angles created, clockwise from top left are 1, 2, 3, 4; 5, 6, 7, 8; 13, 14, 15, 16; 9, 10, 11, 12. one

two

four

eight

There are two angles m∠14 and m∠13 which are supplementary to angle 14.

Angle is formed by the intersection of two lines. Two angles are said to be supplementary if both of the angles add up to 180 degrees.

From the diagram:

m∠13 + m∠14 = 180° (sum of angles in a straight line )

Also:

m∠15 + m∠14 = 180° (sum of angles in a straight line )

There are two angles m∠14 and m∠13 which are supplementary to angle 14.

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i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this