Side Effects
Innies and Outies
Square This
Square That
Mirrors & Patterns
100
Convex or Concave?
Concave
100
The sum of interior angles is 180°.
100
Unit area = 7 square units.
100
What is the name of the line segment drawn from the center of a regular polygon that is perpendicular to the side?
Apothem
100
A line that divides a figure into two halves that are reflections of each other is called a _______________.
Line of symmetry
200
What makes a shape a regular polygon?
All of the sides are equal and all of the interior angles are congruent.
200
The sum of the exterior angles is 360°.
200
What is the unit area of this polygon?
Unit area = 10 square units.
200
Area = 60 ft2.
200
How many lines of symmetry does this decagon have?
5 lines of symmetry.
300
Name this polygon and if it is regular or not regular.
Regular Octagon
300
One interior angle measures 120°.
300
What is the area of this triangle?
The area is 15 in2.
300
What is the area of this regular pentagon?
Area = 110 in2.
300
Which type of tessellation is this?
A regular tessellation
400
Name this polygon.
Is it regular or not regular, convex or concave?
Pentagon, not regular, convex
400
what is the measure of one interior angle
and the measure of one exterior angle?
Interior angle = 135°, exterior angle = 45°.
400
What is the area of this trapezoid?
Area = 70 ft2.
400
What is the area of the shaded region of this regular pentagon?
Area = 1824 in2.
400
What is the order of rotational symmetry of this octagon?
What is the angle of rotational symmetry?
The order of rotational symmetry is 8.
The angle of rotational symmetry is 45°.
500
Hexagon, regular, convex, 9 diagonals.
500
The sum of the measures of six interior angles of a heptagon is 830°. What is the measure of the seventh interior angle?
The measure of the seventh interior angle is 70°.
500
What is the area of this trapezoid?
Area = 227.5 yd2.
500
Area = 150(√3) in2 = 259.81 in2.
500
Which type of tessellation is this?
What figures is it made of?
Semi-regular tessellation made with octagons and squares.