1. By Miss Jamison and Mrs. Bufkin
Grids, Polygons, Triangles, Attributes of Quadrilaterals, and Special Quadrilaterals Study Guide
By Miss Jamison and Mrs. Bufkin

2. Vocabulary
Coordinate grid-is used to plot and name the locations of points in a plane.
X-axis-the line that is horizontal on a coordinate grid.
Y-axis-the line that is vertical on a coordinate grid.
Origin-the point at which the x-axis and y-axis intersect.
Ordered Pair-a point in a plane is named by using this.
X-Coordinate-the first number in the ordered pair that names the distance from the origin along the x-axis.
Y-Coordinate-the second number in the ordered pair that names the distance from the origin along the y-axis.

3. Examples
Y-axis
X-axis
Origin

4. Examples
Point A is 3 units to the right of the origin and 5 unites up from the origin.
X Y
(3,5)

5. Vocabulary Polygon-is a closed plane figure made up of line segments.
Regular Polygon-has sides of equal length and angles of equal measure.
Examples of Polygons: Triangles (3 sides), Quadrilaterals (4 sides), Pentagon (5 sides), Hexagon (6 sides), Octagon (8 sides).

6. Examples

7. Vocabulary Equilateral Triangle- all sides are the same length.
Isosceles Triangle- two sides are the same length.
Scalene Triangle- no sides are the same length.
Right Triangle- one angle is a right angle.
Acute Triangle- all three angles are acute angles.
Obtuse Triangle- one angle is an obtuse angle.
A triangles angles add up to be 180 degrees.

8. Examples

9. Examples

10. Vocabulary
Parallelogram-both pairs of opposite sides are parallel and equal in length.
Trapezoid- only one pair of parallel sides.
Rectangle- a parallelogram with four right angles. All rectangles are parallelograms.
Rhombus- a parallelogram all sides the same length.
Square- a rectangle with all sides the same length. A square can aslo be called a rhombus or a rectangle.

11. Vocabulary
If a quadrilateral has two pairs of consecutive equal angles it is a trapezoid. Example: 60 degrees 120 degrees 120 degrees 60 degrees. This would be a trapezoid because 120 degrees is right by each other.
If a quadrilateral has two pairs of opposite equal angles it is a parallelogram. Example: 60 degrees 120 degrees 60 degrees 120 degrees. This would be a parallelogram because the 60 degrees and 120 degrees are not next to its equal.

12. Examples

13. Vocabulary Trapezoid- has exactly one pair of parallel sides.
Parallelogram- has two pairs of opposite sides parallel and equal.
Rectangle- has four right angles.
Rhombus-has all sides the same length.
Square-has all sides the same length.

14. Examples Name the following polygons as many names as possible.
Quadrilateral, parallelogram,
Quadrilateral, parallelogram, rectangle