Geometry Pre Test & Study Guide

Study Notes

Polygon Definitions

A polygon is a closed, two-dimensional shape made up of straight line segments.
Regular polygons have sides of equal length and angles of equal measure; examples include equilateral triangles and squares.
Irregular polygons have sides and angles that are not all the same; examples include scalene triangles and random quadrilaterals.

Plotting Polygons

When given coordinate points, plot each point on a graph and connect them in the specified order to form a figure.
Complete the figure by joining the starting and ending points to identify it as a polygon.

Hierarchy of Polygons

Begin with a 3-sided polygon (triangle) and progress through to a 10-sided polygon (decagon).
Ensure that each polygon is drawn accurately, counting vertices to match the polygon's name.

Angle Naming

Angles can be named in four different ways based on their vertices and sides.
The vertex of an angle is the point where the two sides meet, and each side can be identified by naming the endpoints.

Angle Classification

Angles can be classified as:
- Acute: Less than 90 degrees
- Right: Exactly 90 degrees
- Obtuse: Between 90 and 180 degrees
- Reflex: Greater than 180 degrees
Measure angles accurately using a protractor to determine their classification.

Quadrilaterals Hierarchy

Create a hierarchy to show relationships among quadrilaterals:
- Squares are a type of rhombus.
- Rectangles do not have congruent sides; they have opposite sides that are equal.
- Not all quadrilaterals have right angles.
- Trapezoids have four sides, not more.
- Four-sided polygons with two sets of parallel sides include rectangles and parallelograms.

Description

This quiz covers fundamental concepts of polygons, including definitions and examples of regular and irregular polygons. Students will also plot points to identify polygons and complete a chart of polygons starting from a 3-sided figure. Prepare to enhance your geometry skills with this comprehensive guide!