Properties and Terminology of Shapes

The video tutorial introduces key vocabulary for topic 13 in Envision Math, focusing on 2D and 3D shapes. It explains the concepts of plane and solid shapes, vertices, and various polygons like quadrilaterals, pentagons, and hexagons. The tutorial also covers angles, particularly right angles, and explores solid shapes with a focus on cubes, detailing their faces and edges.

What is another name for two-dimensional shapes?

• Plane shapes

• Flat shapes

• Solid shapes

• Round shapes

What is the main focus of topic 13 in Envision Math?

• Fractions

• Shapes and their properties

• Multiplication

• Addition and subtraction

What is the difference between a plane shape and a solid shape?

• Both are 2D

• Both are 3D

• Plane shapes are 2D, solid shapes are 3D

• Plane shapes are 3D, solid shapes are 2D

What is the term used for the point where two lines meet in a shape?

• Face

• Edge

• Vertex

• Angle

What is the plural form of 'vertex'?

• Vertexs

• Vertice

• Vertices

• Vertexes

Which prefix indicates a shape with four sides?

• Octa

• Quad

• Penta

• Hexa

How many sides does a pentagon have?

• Four

• Five

• Six

• Seven

What does the prefix 'hexa' mean?

• Four

• Five

• Six

• Seven

Which shape is known for having a resemblance to a house?

• Hexagon

• Quadrilateral

• Octagon

• Pentagon

What is the term for a shape with five sides?

• Octagon

• Hexagon

• Pentagon

• Quadrilateral