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Geo.H. Chapter 2 Voc
Geometry Honors: Chapter 2 Vocabulary
| Question | Answer |
|---|---|
| 3 undefined terms | point, plane, line |
| basic unit of geometry; indicates location; infinately small; labek with a capital letter | point |
| straight arrangement of points which is infinate in length; no end points; label with points | line |
| flat surface; infinate length and width | plane |
| statement that explains the meaning of a word; places a word in a large group but identifies its unique characteristics | definations |
| set of all points | space |
| points that lie on the same line | collinear points |
| points that lie on the same plane | coplaner |
| straight arrangemen of points with 2 endpoints; name with 2 endpoints | segment |
| distance between endpoints | length of a segment |
| straight arrangement of points with 1 endpoint; name with endpoint | ray |
| 2 rays that share a common endpoint | angle |
| degree of rotation between the 2 rays, between 0 and 180 degrees | measure of an angle |
| the instrument used to measure an angle | protractor |
| figures that are the same size and the same shape | congruent figures |
| segments that have the same length | congruent segments |
| angles that have the same measure | congruent angles |
| a polygon with 3 sides | triangle |
| "if-then" definition; ex; if a polygon is a triangle- then it has 3 sides | biconditional definition |
| swithes "if then" definitions; ex: if a polygon has 3 sides, then it is a triangle | converse |
| an angle that measures 90 degrees | Right Angle |
| an angle thats measurement is less than 90 degrees and greater thatn o degrees | Acute Angle |
| an angle thats measurement is greater thatn 90 degrees and less than 180 degrees | obtuse angle |
| the point on a segment that is the same distance from each endpoint | midpoint of a segment |
| a ray that begins at the vertex and divides the angle's measure in half | angle bisector |
| coplaner lines that do not intersect | parallel lines |
| lines that intersect to form a 90 degree angle | perpendicular lines |
| 2 angles whose measurements add to 90 degrees | pair of complementary angles |
| two angles whose measurements add to 180 degrees | pair of supplementary angles |
| a pair of intersecting lines that share a common vertex but are non-adjacent | vertical angles |
| a pair of adjacent angles that form a linear pair; they share a common and a common side | Linear pair of angles |
| closed figures; made ip of segments; named by number of sides | polygons |
| # of sides = # of vertices = # of _____ | angles |
| sides of polygons are _______ | segments |
| ________ is a point where 2 sides meet | vertex |
| sum of all sides of a polygon | perimeter |
| in a polygon, consecutive sides share a common____. | vertex |
| In a polygon, consecutive angles share a common ________. | side |
| polygons with corresponding sides and corresponding angles | congruent polygons |
| a segment connecting non-adjacent vertises | diagonal of a polygon |
| polygons whose sides have the same measure | equilateral polygons |
| polygons whose angles have the same measure | equiangular polygons |
| polygon that is both equilateral and equiangular | regular polygon |
| polygon with 3 sides | triangle |
| polygom with 4 sides | quadrilateral |
| polygon with 5 sides | pentagon |
| polygon with 6 sides | hexagon |
| polygon with 7 sides | heptagon |
| polygon with 8 sides | octagon |
| polygon with 9 sides | nonagon |
| polygon with 10 sides | decagon |
| polygon with 11 sides | undecagon |
| polygon with 12 sides | dodecagon |
| triangle with one right angle | right triangle |
| triangle with all 3 angles less tthan 90 degrees | acute triangle |
| triangle with 1 obtuse angle | obtuse angle |
| to have a single point of intersection | concurrent |
| trianle with no equal sides | scalene triangles |
| triangle with at least 2 congruent sides | isosceles |
| angle formed by 2 sides of equal length | vertex angle |
| side opposite a vertex angle | base |
| angles at the endpoint of base | base angle |
| segment from an vertex to the midpoint of opposite side | median |
| segment from a vertex perpendicular to the opposite side | altitude |
| A quadrilateral with 1 pair of opposite parallel | Trapezoids |
| A quadrilateral with 2 pairs of adjacent and congruent sides | Kite |
| Quadrilateras with 2 pairs of opposite sides parallel | Parallelograms |
| An equilateral parallelogram | Rhombus |
| A parallelogram that is eguiangular | Rectangles |
| A regular parallelogram; an equiangular rhombus; an equilateral rectangle | Square |
Created by:
ElizabethI
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