Chapter Overview
This chapter introduces students to fundamental concepts of geometry, focusing on shapes and angles. It explains the types of shapes such as triangles, quadrilaterals, and circles, along with their properties. The chapter also covers different types of angles, how to measure them, and their significance in everyday objects and structures.
Important Keywords
- Angle: The space between two lines or surfaces that meet at a point.
- Right Angle: An angle of exactly 90 degrees.
- Acute Angle: An angle less than 90 degrees.
- Obtuse Angle: An angle greater than 90 degrees but less than 180 degrees.
- Straight Angle: An angle of exactly 180 degrees.
- Triangle: A polygon with three sides and three angles.
- Quadrilateral: A polygon with four sides and four angles.
- Polygon: A closed figure with three or more straight sides.
- Circle: A round shape where every point is equidistant from the center.
Detailed Notes
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