Tesselations
Symmetry
Polygons
Transformations
Formulas!
100
Can a regular hexagon tesselate?
Yes!
100
Does the letter M have line symmetry?
Yes!
100
Define polygon.
A polygon is ENCLOSED and has a FINITE number of sides
** It must have at least 2 sides
100
Dilate the point (4, -2) by a scale factor of 3.
(12, -6)
100
What is the formula to find the sum of the interior angles of a polygon?
(n-2)180
200
What kind of tessleation is this?
Regular
200
Which letters in the word MATH have exactly 1 line of symmetry?
M, A, and T
(H has a vertical and a horizontal line of symmetry)
200
What is a regular polygon
A polygon with congruent sides and congruent angles.
200
Rotating a figure 90° clockwise is the same as rotating a figure ___° counterclockwise.
270
200
What is the formula to find an interior angle of a regular polygon?
(n-2)180/n
300
What kind of tessellation is this?
Regular
300
Which letters in VIRTUAL has no lines of symmetry.
R and L
300
Name a regular quadrilateral.
Square
300
Reflect the point (3, -1) across the x-axis.
(3, 1)
300
What is the sum of the exterior angles of any polygon?
360°
400
What kind of tesselation is this?
Semi-Regular
400
How many lines of symmetry does an isosceles trapezoid have?
1
400
How many sides does a regular heptagon have?
7
400
Describe this rotation.
180°
400
What formula do you use to find the exterior angle of a regular polygon.
360/n
500
How can you tell if a polygon will tesselate the plane?
Divide 360 by the interior angle, if it divides evenly, then the it will tesselate
500
How many lines of symmetry does a regular polygon have?
The same as it's number of sides
Equilateral Triangle = 3
Square = 4
Regular Pentagon = 5
500
How many sides does a regular dodecagon have?
12
500
Describe this reflection.
Reflect across the x-axis.
500
What relationship do an interior and an exterior angle of a regular polygon have?
Supplementary (they add to 180°)