📐 Part 1: 2D Shape Classification

A shape with 3 sides and 3 vertices:

A shape with 4 equal sides and 4 right angles:

📏 Part 2: Angle Classification

Angles on a straight line add up to _______ degrees.

Angles at a point add up to _______ degrees.

Vertically opposite angles are _____________.

🎲 Part 3: 3D Shape Properties

Cube: Faces: _____ Edges: _____ Vertices: _____

Triangular prism: Faces: _____ Edges: _____ Vertices: _____

Square pyramid: Faces: _____ Edges: _____ Vertices: _____

What shape are the faces of a triangular prism?

✏️ Part 4: Drawing and Design

An isosceles triangle:

A quadrilateral with one pair of parallel sides:

🤔 Part 5: Problem Solving

Why can't a triangle have two obtuse angles? Use your knowledge of angle relationships to explain.

Name three objects in your classroom or home that contain right angles. Explain where you see the right angles.

If you were building a bridge using triangular supports, which type of triangle (equilateral, isosceles, or scalene) would you choose and why?