What is the perimeter of the quadrilateral ABCD? 11 B
A
8
C С
D
24
38
33
35

triangle abd is isosceles triangle and triangle dbc is equilateral triangle.

opposite sides of equal angles are same. so, ad= bd

and bd is the side of equilateral triangle. so, bd=bc=dc

perimeter of quadrilateral = sum of all sides.

perimeter=11+8+8+8

perimeter =35

robert puts 2 in each row

answer: for each 3 girls there is 2 boys . 3: 2

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