Unit 1- Introducing Geometry

Question 1

what are the 3 building blocks of geometry?

Answer 1

points,
lines,
planes
(undefined terms)

Question 2

characteristics of a point

Answer 2

only show location, have no size
represented with a dot
named with a capital letter
three dimensional

Question 3

characteristics of a line

Answer 3

infinite number of points lined up straight
infinite length
no thickness
named by letter names of two points on the line with the line symbol above OR a small cursive letter

Question 4

characteristics of a plane

Answer 4

flat surface that extends infinitely along a length and a width
no thickness and no border
named with a cursive capital letter
extends forever in all directions

Question 5

collinear

Answer 5

on the same line

Question 6

coplanar

Answer 6

on the same plane

Question 7

line segment

Answer 7

portion of a line that has length

consists of two points (endpoints) and all points in between them that are colinear with the two points

Question 8

equal

Answer 8

lengths(values) that are the same

Question 9

congruent

Answer 9

figures that have equal measures remember tick marks

Question 10

midpoint

Answer 10

the point on a segment that is the same distance from both endpoints remember tick marks

Question 11

bisect

Answer 11

to divide the segment into two congruent segments remember tick marks

Question 12

ray

Answer 12

part of a line that contains a point and all the points on the line in one direction, begins at a point and extends infinitely in one direction

Question 13

angle

Answer 13

formed by two rays that share a common endpoint
the two rays cannot be collinear
named by 3 points and angle symbol

Question 14

vertex

Answer 14

common endpoint of the two rays that from the angle

Question 15

reflex angle

Answer 15

largest amount of rotation about the vertex from one ray to another

Question 16

congruent angles

Answer 16

angles that have equal measure remember arches and tick marks

Question 17

angle bisector

Answer 17

divides the angle into two congruent angles remember tick marks

Question 18

parallel lines

Answer 18

lines in the same plane that never intersect remember symbol

Question 19

polygon

Answer 19

closed figure in a plane, formed by connecting line segment
each line segment is called a side of the polygon
each endpoint where the sides meet is a vertex
named by listing the vertices in consecutive order

Question 20

diagonal

Answer 20

line segment that connects two non consecutive vertices

Question 21

convex polygon

Answer 21

polygon that has all diagonals inside the polygon

Question 22

concave polygon

Answer 22

polygon that has at least one diagonal outside the polygon

Question 23

congruent polygons

Answer 23

two polygons that are exactly the same size and shape, congruent figures must be named in a particular order so that each angle/side matches up

Question 24

perimeter

Answer 24

sum of the lengths of the polygons sides do not include diagonals
denoted by capital letter P

Question 25

equilateral polygons

Answer 25

polygons in which all sides have equal length *look for tick marks*

Question 26

equiangular polygons

Answer 26

polygons in which all angles have equal measures *look for arches and tick marks*

Question 27

regular polygons

Answer 27

polygons that are equilateral and equiangular

Question 28

right triangle

Answer 28

triangle with one right angle

Question 29

acute triangle

Answer 29

triangle with 3 acute angles | always sum to 180 degrees

Question 30

obtuse angle

Answer 30

triangle with one obtuse angle

Question 31

scalene triangle

Answer 31

triangle with no congruent sides

Question 32

equilateral triangle

Answer 32

triangle that has 3 congruent sides

Question 33

isosceles triangle

Answer 33

triangle that has at least two congruent sides vertex angle between sides of equal length base side opposite the vertex angle base angles, two angles opposite the two sides of equal length

Question 34

trapezoid

Answer 34

quadrilateral with exactly one pair of parallel sides

Question 35

kite

Answer 35

quadrilateral with two distinct pairs of consecutive congruent sides

Question 36

parallelogram

Answer 36

a quadrilateral with two pairs of parallel sides

Question 37

rhombus

Answer 37

equilateral parallelogram

Question 38

rectangle

Answer 38

equiangular parallelogram

Question 39

square

Answer 39

equilateral rectangle equiangular rhombus regular quadrilateral

Question 40

space

Answer 40

the set of all points cannot be contained in a flat surface 3 dimensional

Question 41

isometric drawing

Answer 41

drawing of a 3D object that shows three faces in one view

Question 42

net

Answer 42

a two dimensional pattern that you can cut and fold to form a 3D figure

Question 43

locus of points

Answer 43

the set or locations of all points that meet the given conditions