Question

Write the negation of the following statement: ABC and DEC are

complementary angles.
A)OZABC and ZDEC are not complementary angles.
B)ZABC and ZDEC are supplementary angles.
C)The sum of ABC and ZDEC is 180 degrees.
D)The sum of ABC and ZDEC is 90 degrees.

Answer 1

D) The sun of ABC and ZDEC is 90 degrees
Why?
Complementary angles: add up to 90 degrees.
Supplementary angles: add up to 180
degrees.