Geometric Figures Examples for 7th Graders

📐 Quick Study Guide

• 🔵 Point: A point is a location in space. It has no size, only position. Represented by a dot.
• 📏 Line: A line is a straight path that extends infinitely in both directions. It has no thickness.
• segment: A line segment is a part of a line that has two endpoints. We can measure its length.
• ray: A ray is a part of a line that has one endpoint and extends infinitely in one direction.
• plane: A plane is a flat surface that extends infinitely in all directions.
• 📐 Angle: An angle is formed by two rays sharing a common endpoint (vertex). Angles are measured in degrees.
• 🔶 Types of Angles:
  • Acute Angle: An angle less than $90^{\circ}$.
  • Right Angle: An angle exactly $90^{\circ}$.
  • Obtuse Angle: An angle greater than $90^{\circ}$ but less than $180^{\circ}$.
  • Straight Angle: An angle exactly $180^{\circ}$.
• 🔷 Polygons: Closed figures formed by line segments.
  • Triangle: 3 sides
  • Quadrilateral: 4 sides
  • Pentagon: 5 sides
  • Hexagon: 6 sides
  • Heptagon: 7 sides
  • Octagon: 8 sides
• 🔄 Perimeter: The total distance around the outside of a two-dimensional shape.
• ➕ Area: The amount of space inside a two-dimensional shape.

✍️ Practice Quiz

1. Which of the following best describes a line segment?
   1. A) A point with no size.
   2. B) A straight path extending infinitely in both directions.
   3. C) A part of a line with two endpoints.
   4. D) A part of a line with one endpoint extending infinitely.
2. What is an angle that measures less than $90^{\circ}$ called?
   1. A) Obtuse Angle
   2. B) Right Angle
   3. C) Straight Angle
   4. D) Acute Angle
3. A shape has 4 sides. What is this shape called?
   1. A) Triangle
   2. B) Pentagon
   3. C) Quadrilateral
   4. D) Hexagon
4. What is the total distance around the outside of a shape called?
   1. A) Area
   2. B) Volume
   3. C) Perimeter
   4. D) Surface Area
5. Which of the following is NOT a type of quadrilateral?
   1. A) Square
   2. B) Circle
   3. C) Rectangle
   4. D) Parallelogram
6. What is a polygon with 5 sides called?
   1. A) Hexagon
   2. B) Octagon
   3. C) Pentagon
   4. D) Heptagon
7. Two rays sharing a common endpoint form what?
   1. A) A line segment
   2. B) An angle
   3. C) A plane
   4. D) A line