2D Shapes
What is an example of a 2D shapes?
Square, Rectangle, Circle, Triangle, Trapezoid, Rhombus, etc.
What is a real life example of a cube?
Dice, tissue box, box, etc.
What does congruent mean?
Equal to or the same as
What is a quadrilateral?
A shape with four sides.
True or False: A ray is a line with one endpoint.
True
How many sides does a circle have?
0 sides
How many faces, edges, and vertices does a sphere have?
0 faces, 0 edges, and 0 vertices
What does parallel mean?
Lines that never meet (or cross), such as railroad tracks or opposite sides of a rectangle
What is a parallelogram?
A shape with 2 sets of parallel lines (rhombus, rectangle, square).
A line with two endpoints
True or False: Solid shapes are 2D.
FALSE: FLAT shapes are 2D and SOLID shapes are 3D.
How many faces, edges, and vertices does a square pyramid have?
5 faces, 8 edges, and 5 vertices
What does perpendicular mean?
Two lines the meet and make 90 degree angles (form a T shape)
What is a trapezoid?
A shape with 1 set of parallel lines.
What is an obtuse angle?
An angle that is greater than 90 degrees.
How would you notate on a shape that the lines are congruent and parallel?
Congruent lines are notated with a line and parallel lines are notated with an arrow.
How many faces, edges, and vertices does a rectangular prism have?
6 faces, 12 edges, and 8 vertices
What are solid shapes? What is an example?
3D shapes (cylinder, rectangular prism, cube, pyramid, etc.)
What is a rectangle?
A parallelogram (2 sets of parallel lines) with 4 right angles.
What is the symbol for parallel lines? What is the symbol for perpendicular lines?
Parallel lines: ||
Perpendicular lines: Upside down 'T'
What makes a right triangle a right triangle?
It has one angle that is exactly 90 degrees.
How many faces, edges, and vertices does a cube have?
6 faces, 12 edges, and 8 vertices
What are the definitions of scalene triangles, isosceles triangles, and equilateral triangles?
Scalene - no sides are the same
Isosceles - two sides are the same
Equilateral - all three sides are the same
What is a square?
A parallelogram with 4 congruent sides and 4 right angles.
What are two lines that cross one another called?
Intersecting lines