Transcript Grids, Polygons, Triangles, Attributes of Quadrilaterals, and Special

Grids, Polygons, Triangles,
Attributes of Quadrilaterals, and
Special Quadrilaterals Study
Guide
By Miss Jamison and Mrs. Bufkin
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.
Examples
Y-axis
X-axis
Origin
Examples
XY
(3,5)
Point A is 3 units to the right of the
origin and 5 unites up from the
origin.
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).
Examples
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.
Examples
Examples
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.
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.
Examples
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.
Examples
• Name the following polygons as many names as possible.
Quadrilateral,
parallelogram,
Quadrilateral,
parallelogram,
rectangle