Chapter 10

Question 0

Regular Polygon

Answer 0

A polygon that is equilateral and equiangular

Question 1

Polygon

Answer 1

A closed figure formed by connecting segments

Question 2

Convex

Answer 2

A polygon if the sides when extended don’t cross through the interior of the polygon

Question 3

Concave

Answer 3

A polygon if the sides when extended cross through the interior of the polygon

Question 4

Thm 10-1 Interior Angle Sum Thm

Answer 4

If a convex polygon has n sides then the sum of the measure of its interior angles in (n-2)180

Question 5

Thm 10-2 Exterior Angle Thm

Answer 5

In any convex polygon the sum of the measure of the exterior angles one at each vertex is 360

Question 6

Postulate 10-1 Area Postulate

Answer 6

For any polygon and a given unit of measure there is a unique number A called the measure of the area of the polygon

Question 7

Composite Figure

Answer 7

A figure made up of more than one shape

Question 8

Postulate 10-3 Area Addition Postulate

Answer 8

The area of a given polygon equals the sum of the area of the non overlapping polygons that form the given polygon

Question 9

Thm 10-3 Area of a Triangle

Answer 9

The area of a triangle is found by the formula A=bh/2 where b is the base and h is the height

Question 10

Thm 10-4 Area of a Trapezoid

Answer 10

The area of a trapezoid is found by the formula A=(b1+b2)(h)/2 where b1 and b2 is the bases and h is the height

Question 11

Center

Answer 11

Of a regular polygon is a point in the interior that is equidistant from all vertices

Question 12

Apothem

Answer 12

Is a segment drawn from the center that is perpendicular to a side of the regular polygon

Question 13

Thm 10-5 Area of a regular polygon

Answer 13

The area of a regular polygon is formed by the formula A=aP/2 where a is the apothem and P is the perimeter

Question 14

Symmetry

Answer 14

Is an exact reflection of a figure on opposite sides of a dividing line or plane

Question 15

Line of symmetry

Answer 15

Is the line that divides a figure into 2 congruent portions

Question 16

Line symmetry

Answer 16

If a figure has a line of symmetry

Question 17

Rotational symmetry

Answer 17

Any figure that can be turned or rotated less than 360 degrees about a fixed point so that the figure looks exactly as it does in its original position

Question 18

Tessellations

Answer 18

Tiled patterns created by repeating figures to fill a plane without gaps or overlaps

Question 19

Regular Tessellations

Answer 19

When only one type of regular polygon is used to form a pattern

Question 20

Semi-regular Tessellations

Answer 20

If 2 or more regular polygons are used in the same order at every vertex

Question 21

Polygon Region

Answer 21

Any polygon and its interior

Question 22

Irregular Figure

Answer 22

Is not a polygon and if cannot be made from combinations of polygons