Mathematics
Grade9
Easy

Question

Angles 4 and 1 are what angle pair?

  1. Complementary
  2. Supplementary
  3. Acute
  4. Vertical

hintHint:

Two angles are said to be supplementary angles if they add up to 180 degrees.

The correct answer is: Supplementary


    Angle 4 and 1 form a linear pair, so they are supplementary.
    Hence, the correct option is (a).

    Supplementary angles can either be adjacent or non-adjacent. So, there are two types of supplementary angles. Each of these types of supplementary angles is explained below.
    (1) Adjacent Supplementary angle.
    (2) Non - Adjacent Supplementary angle.

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