Copy of Triangles

Topic:
Triangles

What makes a triangle equilateral, isosceles, or scalene?

How are these triangles the same? How are they different? Manipulate the triangles by dragging their blue corner points. What happens to their side lengths?

Acute Triangle: Drag Point B. How many angles are acute?

Obtuse Triangle: How many angles are obtuse in an obtuse triangle?

Right Triangle: How many angles are RIGHT angles?