Explanation:
1. If Group ={ Polygon }
Subgroup ={ Triangle, Quadrilateral, Pentagon, Hexagon,Heptagon,Octagon,Nonagon, Decagon}
2. If, Group = {Triangle}
Subgroup={Isosceles Triangle, Equilateral Triangle, Scalene Triangle}
3. Group={Quadrilateral}
Subgroup={Parallelogram, Rhombus, Square, Rectangle,Kite}
Picture is depicted below.
Answer:
65 parts
Step-by-step explanation:
20*3=60
20*(15/60)= 5
60+5=65
r=85
r-76=9
add 76 to both sides
hope this is helpful