Reflections, Distance & Polygons on the Coordinate Plane

Front

What is the perimeter of a shape?

Back

The perimeter is the total distance around the outside of a shape, calculated by adding the lengths of all its sides.

Front

How do you calculate the distance between two points on a coordinate plane?

Back

Use the distance formula: Distance = √((x2 - x1)² + (y2 - y1)²).

Front

What is the length of a line segment?

Back

The length of a line segment is the distance between its two endpoints.

Front

What are the coordinates of a rectangle's vertices?

Back

The coordinates are the points that define the corners of the rectangle on the coordinate plane.

Front

How do you find the longest side of a rectangle?

Back

Identify the lengths of all sides and select the greatest value.

Front

What is the distance between the points (5, -3) and (5, 6)?

Back

The distance is 9 units, calculated as |y2 - y1| since x-coordinates are the same.

Front

What is a polygon?

Back

A polygon is a closed figure with three or more straight sides.

Front

What is the difference between area and perimeter?

Back

Area measures the space inside a shape, while perimeter measures the distance around it.

Front

How do you reflect a point across the x-axis?

Back

To reflect a point (x, y) across the x-axis, change the sign of the y-coordinate to get (x, -y).

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.