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What type of angle is this?
A. Straight angle
B. Supplementary
C. Complementary

What type of angle is this? A. Straight angle B. Supplementary C. Complementary-example-1
User Lazy Dave
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1 Answer

5 votes

Answer:

Explanation:

If sum of two angles are 90, then they are complementary angles

x = 90 - 51 = 39

User Lin Jianjie
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