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Problems on complementary and supplementary angles are most easy to solve if you just remember the numbers 90 and 180. With the definitions given below, you will know how these numbers have been used in angles.
Utilize our printable complementary and supplementary angles worksheets to help build your child's skill at identifying complementary and supplementary angles, finding the unknown angles, using algebraic expressions to find angular measures, and more.
the angle relationship between the angles that you are working with. Are they supplementary (sum to 180 0 ) OR complementary(sum to 90 )? Are they congruent to each other? vertical, alternate interior, alternate exterior , or corresponding angles.
Congruent Complements Theorem These work in a similar fashion. If angles are complementary to the same angle, then they are congruent. If angles are complementary to congruent angles, th en they are congruent.
The following theorems hold true for angles and can be used in proofs dealing with angles. Example: Write a two-column proof. Given: ∠ ABC and ∠CBD are complementary. ∠DBE and ∠CBD form a right angle. Prove: ∠ ABC ≅ �. D. Statements. Reasons. Example: Complete each proof. 1. Given: ⊥ ; ∠1 and ∠3 are complementary.
Complementary and Supplementary Angle Worksheet Name _____ Date _____ 1. If two angles add up to 180o they are _____ angles. 2. If two angles add up to 90°, they are _____ angles. One angle of a pair of complementary angles is given. What is the measurement of the other angle? 3.
4) The complementary angle of 54° is 36° 5) The complementary angle of 85° is 5° 6) The complementary angle of 84° is 6° 7) The complementary angle of 44° is 46° 8) The complementary angle of 60° is 30° 9) The complementary angle of 34° is 56° 10) The complementary angle of 63° is 27° 11) The supplementary angle of 121° is 59°
