Three angles of a quadrilateral are 75,120, 90,then the fourth angle..
       
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
Answer:
75
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality<u>
</u>
<u>Geometry</u>
- Sum of Angles in a Quadrilateral: 360
Step-by-step explanation:
<u>Step 1: Set up</u>
75 + 120 + 90 + ∠4 = 360
<u>Step 2: Solve</u>
- Add:                                                                                                                   285 + ∠4 = 360
- [Subtraction Property of Equality] Subtract 285 on both sides:                   ∠4 = 75
 
                                
             
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jk
idk either, im bored lol