The total distance around a two-dimensional shape.

The total distance around a two-dimensional shape.

• A. Unit
• B. Decimal
• C. Trend
• D. Perimeter

Answer: (D)

The total distance around a two-dimensional shape is the perimeter. It’s found by adding up the lengths of all the sides along the outside edge. For example, a rectangle with sides 3 and 5 has a perimeter of 2 times (3 plus 5), which is 16. In general, you sum every edge that borders the outside. The other terms don’t fit this idea: a unit is a single measure, a decimal is a way to write numbers, and a trend describes how data changes over time. So the perimeter is the boundary length around the shape.

The total distance around a two-dimensional shape is the perimeter. It’s found by adding up the lengths of all the sides along the outside edge. For example, a rectangle with sides 3 and 5 has a perimeter of 2 times (3 plus 5), which is 16. In general, you sum every edge that borders the outside. The other terms don’t fit this idea: a unit is a single measure, a decimal is a way to write numbers, and a trend describes how data changes over time. So the perimeter is the boundary length around the shape.