2D Polygons
What shape has 4 vertices, 4 sides, and 2 pairs of parallel lines?
Rectangle
How many lines of symmetry does a square have?
A square has 4 lines of symmetry.
What does it mean if a shape has perpendicular sides?
The sides meet to form a 90 degree (right) angle.
What are any 4 sided polygons called?
Quadrilaterals
Name a quadrilateral with NO right angles.
Trapezoid, rhombus or parallelogram
What does a line of symmetry do?
It splits (divides) a 2D polygon into 2 equal parts (in half).
What is a polygon?
A closed shape, 2D shape, with only straight edges
Name 3 letters in the alphabet that have a line of symmetry.
A, E, T, I, D, B, H, M, X, ...
True or False: A triangle is a quadrilateral.
False --> a triangle has three sides
What makes 2 lines parallel?
They are straight lines, equal distance apart from each other and will never touch no matter how long they are.
What shape has 3 sides, 3 vertices, and 1 line of symmetry?
Triangle
I have 4 sides, 1 pair of parallel sides and no right angles. I have 1 line of symmetry. Who am I?
Trapezoid
How many pairs of parallel lines does a trapezoid have?
1 pair
Name 3 types of triangles.
Acute, obtuse, right, scalene, isosceles and equilateral
How many lines of symmetry does an equilateral triangle have?
3 lines of symmetry
True or False: All quadrilaterals have 4 right angles.
False
How many lines of symmetry does a circle have?
Infinite
Name 3 types of quadrilaterals.
Rhombus, Square, Rectangle, Trapezoid, Parallelogram
What is a parallelogram?
2 sets of parallel lines, 4 vertices, 4 sides, polygon