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please tell me the step process of this btw this is 7th-grade math its angle measurements I'm confused about the process pls help.

please tell me the step process of this btw this is 7th-grade math its angle measurements-example-1

1 Answer

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Answer:

Angle BDA is 90°

(2x + 3) + 55 = 90

2x + 3 + 55 = 90

2x + 58 = 90

2x = 90 - 58

2x = 32

x = 32/2

x = 16

Hence,

x=16

x=16Angle BDA is 90°.

User Matteo Umili
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