What are the basic concepts of geometry?

What are the basic concepts of geometry?

Geometry is the branch of mathematics that deals with shapes, sizes, and properties of space. Key concepts include points, lines, angles, surfaces, and solids.

Can you explain what a point and a line are?

A point is a precise location in space with no size or dimension. A line is a straight one-dimensional figure that extends infinitely in both directions, defined by two points.

What is the difference between a line segment and a ray?

A line segment has two endpoints and a fixed length, while a ray starts at one point and extends infinitely in one direction.

What are angles and how are they measured?

Angles are formed by two rays that share a common endpoint. They are measured in degrees or radians, indicating the rotation from one ray to the other.

Can you give me examples of different types of angles?

Sure! Common types of angles include acute (less than 90°), right (exactly 90°), obtuse (greater than 90° but less than 180°), and straight (exactly 180°).