In geometry proofs, we commonly use step-by-step logic to figure out the proof. This is commonly used in Computer Science for understanding how computers work, process, and store information(I speak from personal experience). This is also commonly used in Law. You use this in Law as a lawyer to deduce information using step-by-step logical processes and logic, otherwise it's just wishful thinking. So, Law also uses the same reasoning skills used in Geometry proofs.
Answer:
E) 70
Step-by-step explanation:
Using combination factorial
a triangle has three vertices and a quadrilateral has 4 vertices
The number of triangles and quadrilaterals = ⁷C₃ + ⁷C₄ = 
= 70
X=1, and 3/8 it is a mixed number.
