Geometry 2 Vocab

Question 1

Polygon

Answer 1

• has three or more sides
• closed
• only segments (no curves)
• only two segments at a vertex

Question 2

Quadrilateral

Answer 2

A polygon with four sides

-sum of interior angles is 360 degrees

Question 3

Square

Answer 3

A rectangle with all four sides congruent

A=bh
A=lw

Question 4

Rectangle

Answer 4

A quadrilateral with four right angles

A=lw

Question 5

Rhombus

Answer 5

A parallelogram in which all sides are congruent

A=bh

Question 6

Parallelogram

Answer 6

A quadrilateral with both pairs of opposite sides parallel.

• opposite angles congruent
• adjacent angles supplementary

A=bh

Question 7

Trapezoid

Answer 7

A quadrilateral with exactly one pair of parallel sides.

A=1/2(b1+b2)h

Question 8

Isosceles trapezoid

Answer 8

A trapezoid with two congruent sides

A=1/2(b1+b2)h

Question 9

Vertices

Answer 9

Points where sides of a polygon intersect

Question 10

Sides

Answer 10

Rays that form an angle or the segment that forms a polygon.

Question 11

Regular

Answer 11

(Only for polygons)

All sides and angles are congruent

Question 12

Triangle

Answer 12

A three sided polygon

Question 13

Quadrilateral

Answer 13

A four sided polygon

Question 14

Pentagon

Answer 14

A five sided polygon

Question 15

Hexagon

Answer 15

A six sided polygon

Question 16

Heptagon

Answer 16

A seven sided polygon

Question 17

Octagon

Answer 17

An eight sided polygon

Question 18

Nonagon

Answer 18

A nine sided polygonal

Question 19

Decagon

Answer 19

A ten sided polygon

Question 20

Dodecagon

Answer 20

A twelve sided polygon

Question 21

Perimeter

Answer 21

Distance around the outside of a figure

Question 22

Formula to find a rectangle

Answer 22

A=lw

Question 23

Formula to find a square

Answer 23

A=lw or a=s2

Question 24

Formula to find a triangle

Answer 24

A=1/2bh