category Interactive Builder
Select an entity to understand its fundamental properties and constraints.
Relational States
menu_book Syllabus Insights:
A point has no size, only location. A line segment is the shortest route connecting two specific points.
💡 Interactive: Drag point A or B on the screen to observe constraints dynamically!
Line Segment AB (written as AB)
It has a fixed length with two distinct endpoints A and B. It cannot extend further.
timeline Rotation Classifications:
• Acute: 0° to 90°
• Right: Exactly 90°
• Obtuse: 90° to 180°
• Straight: Exactly 180°
• Reflex: 180° to 360°
• Complete: Exactly 360°
💡 Notice how angle sizes are determined entirely by the "amount of rotation" of the arm!
💡 Interactive: Drag the glowing teal straw arm directly on the canvas to turn it smoothly!
Acute Angle (45°)
The angle is larger than 0° but smaller than a quarter-turn (90°).