Geometry Chapter 3

Front 1

polygon

Back 1

A _____________ is a plane figure formed from the three or more segments such that each segment intersects exactly two other segments, one at each endpoint, and no two segments with a common endpoint are collinear

Front 2

sides of a polygon

Back 2

The segments are called ______________________,

Front 3

vertices of a polygon

Back 3

The common endpoints are called ___________________

Front 4

equiangular polygon

Back 4

An ______________________ is one in which all angles are congruent

Front 5

equilateral polygon

Back 5

An _______________________ is one in which all sides are congruent

Front 6

regular polygon

Back 6

A _________________ is one that is both equiangular and equilateral

Front 7

reflectional symmetry

Back 7

A figure has _____________________ if and only if its reflected image across a line coincides exactly with the pre image

Front 8

axis of symmetry

Back 8

The line is called an _____________________

Front 9

rotational symmetry

Back 9

A figure has _____________________ if and only if it has at least one rotation image, not counting rotation mages of 0 degrees or multiples of 360 degrees, that coincides with the original image

Front 10

central angle

Back 10

A _____________ of a polygon is an angle whose vertex is the center of the polygon and whose sides pass through adjacent vertices

Front 11

equilateral

Back 11

three congruent sides

Front 12

isosceles

Back 12

at least two congruent sides

Front 13

scalene

Back 13

no congruent sides

Front 14

quadrilateral

Back 14

A ________________ is a polygon with four sides

Front 15

trapezoid

Back 15

A ______________ is a quadrilateral with one and only one pair of parallel sides

Front 16

parallelogram

Back 16

A _________________ is a quadrilateral with two pairs of parallel sides

Front 17

rhombus

Back 17

A __________ is a quadrilateral with four congruent sides

Front 18

rectangle

Back 18

A _____________ is a quadrilateral with four right angles

Front 19

square

Back 19

A ________ is a quadrilateral with four congruent sides and four right angles

Front 20

transversal

Back 20

A _____________ is a line that intersects two parallel lines.........do not have to be parallel

Front 21

alternate exterior angles

Back 21

Two nonadjacent exterior angles that lie on opposite sides if a transversal

Front 22

alternate interior angles

Back 22

Two nonadjacent interior angles that lie on opposite sides of the transversal

Front 23

corresponding angles

Back 23

Two nonadjacent angles, one interior and one exterior, that lie on the same side of a transversal

Front 24

same-side interior angles

Back 24

Interior angles that lie on the same side of a transversal

Front 25

exterior angle

Back 25

An angle formed between one side of polygon and the extension of an adjacent side

Front 26

remote interior angle

Back 26

An interior angle of a triangle that is not adjacent to a given exterior angle

Front 27

concave polygon

Back 27

A ___________________ is a polygon that is not convex

Front 28

convex polygon

Back 28

A ___________________ is a polygon in which any line segment connecting two points of the polygon has no part outside the polygon

Front 29

midsegment of a trapezoid

Back 29

A ___________________________ is a line connecting the midpoints of the two nonparallel segments of a trapezoid

Front 30

midsegment of a triangle

Back 30

A __________________________ is a segment whise endpoints are the midpoints of two sides