What Is a Possible Way to Tile the Plane with a Right

question 33

Multiple Choice

What is a possible way to tile the plane with a right triangle?
I: six at every vertex
II: four or eight at every vertex

• A) I only
• B) II only
• C) both I and II
• D) neither I nor II

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Definitions:

Present Value Factors

Multipliers used to calculate the present value of a future amount of money or stream of cash flows given a specific discount rate.

Net Present Value

A financial metric that evaluates the profitability of an investment or project by calculating the present value of expected future cash flows, minus the initial investment cost.

Annuity

A financial instrument that disburses a set series of payments to a person, often employed as a revenue flow for individuals in retirement.

Rate of Return

The increase or decrease in the value of an investment for a given time frame, represented as a proportion of the investment's starting price.