Answer:
26 is the perimeter 
Step-by-step explanation:
you add all of the side numbers just like this:
9+5+12= 26 :)
      Hope this helped :D
 
        
             
        
        
        
All of them have the same answer of -8 except the last one.
        
                    
             
        
        
        
1: I can’t see one it’s cut out sorry :(
2:go down four horrizontal for each line making a rhombus 
3: 3a:true 3b:true 3c:false 3D: false 
4.PART A: Draw a square in the middle. 
4. PART B: Say there are four right angles 
5: Line, point, ray, line segment
6. There are 2 acute and 1 right 
7. A B C 
8: 1/4 1/6 1/8
9: 9a 9c and 9d 
10: square and polygons first, then triangles because they have 4 sides while a triangle has 3
10 PART B: rectangles second, then the pentagons are third, the parallelogram is first, then the triangles because a rectangle has all right angles
11: she drew a square! 
12: polygons without right angles 
13: I can’t draw on your paper just draw three lines in the trapezoid 
13: a c and d 
        
                    
             
        
        
        
Answer:
x=-7
Step-by-step explanation:
Subtract 5 from both sides.
−x=12−5
Subtract 5 from 12 to get 7.
−x=7
Multiply both sides by −1.
x=−7
 
        
                    
             
        
        
        
the inside of quadrilateral is always 360°.So add 75°,90° and 75° and then subyaract from360°.
x+75°+75°+90°=360
×+240°=360°
x=360°-240°
x=120°