- Triangle: A polygon with 3 sides and 3 vertices.
- Quadrilateral: A polygon with 4 sides and 4 vertices. Examples include squares, rectangles, parallelograms, and trapezoids.
- Pentagon: A polygon with 5 sides and 5 vertices.
- Hexagon: A polygon with 6 sides and 6 vertices.
- Heptagon (or Septagon): A polygon with 7 sides and 7 vertices.
- Octagon: A polygon with 8 sides and 8 vertices.
[Polygon] Related Worksheets and Study Guides:
.◂Math Worksheets and Study Guides Second Grade. Time
Study Guide
Time 
Activity Lesson
Hour & Half-hour Time Change Activity Lesson
Measurement: Time Activity Lesson
Time to the Nearest 5 Minutes Activity Lesson
Time Templates Activity Lesson
Time - To the Half Hour Activity Lesson
Time Estimates Activity Lesson
Time of Day: Shadows Activity Lesson
Timing: Race to the Finish Activity Lesson
Buzz's Busy Day Worksheet/Answer key
Time Worksheet/Answer key
Time Worksheet/Answer key
Time Worksheet/Answer key
All About Time Worksheet/Answer key
Time Worksheet/Answer key
Time - Assessment Worksheet/Answer key
Time Worksheet/Answer key
Time Worksheet/Answer key
Between Times Worksheet/Answer key
Clocks - Going Digital Worksheet/Answer key
Passing of Time - Half Hours Worksheet/Answer key
Passing of Time - Hours & Half Hours Worksheet/Answer key
Passing of Time - Hours Worksheet/Answer key
Telling Time with a Shadow Clock Worksheet/Answer key
Buzz Repairs Grandpa's Clock Vocabulary/Answer key
Time Vocabulary/Answer key
Time
Activity LessonActivity LessonActivity LessonActivity LessonActivity LessonActivity LessonActivity LessonActivity LessonActivity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
Measurement (NCTM)
Understand measurable attributes of objects and the units, systems, and processes of measurement.
Recognize the attributes of length, volume, weight, area, and time.