Coordinate Grids and Polygon Areas

Area of a Trapezoid

• @@A=rac{ ext{(b1 + b2)} imes h}{2}@@

• @@A=rac{b1 imes b2 imes h}{2}@@

• @@A=b1 + b2 + h@@

• @@A=rac{(b1 - b2) imes h}{2}@@

*Front:* Coordinate Grid

• A plane with a horizontal (x-axis) and vertical (y-axis) line used to plot points.

• A type of graph that only shows positive values.

• A method for calculating distances between points.

• A system used for measuring angles in geometry.

Area of a Triangle

• @@A = \frac{b(h)}{2}@@

• @@A = b + h@@

• @@A = b \times h@@

• @@A = \frac{b + h}{2}@@

Identify the quadrilateral:

• Rectangle

• Rhombus

• Parallelogram

• Trapezoid

Signs of the ordered pairs in Quadrant IV

• (+,+)

• (-,+)

• (+,-)

• (-,-)

*Front:* Y-axis

• horizontal line on a coordinate grid.

• vertical line on a coordinate grid.

• diagonal line on a coordinate grid.

• curved line on a coordinate grid.

Signs of the ordered pairs in Quadrant II

• (+,+)

• (-,+)

• (+,-)

• (-,-)

Area of a Parallelogram

• @@A = ext{base} imes ext{height}@@

• @@A = ext{base} + ext{height}@@

• @@A = rac{1}{2} imes ext{base} imes ext{height}@@

• @@A = ext{base} imes ext{height}^2@@

Identify the quadrilateral

• Square

• Rectangle

• Trapezoid

• Rhombus

*Front:* X-axis

• vertical line on a coordinate grid.

• horizontal line on a coordinate grid.

• diagonal line on a coordinate grid.

• curved line on a coordinate grid.