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Geo Vocab 8
Geomerty Vocabulary for Chapter 8
| Question | Answer |
|---|---|
| Congruent | Having the same size and shape |
| Line | a straight path that extends without end |
| Line Segment | Having a line between two endpoints |
| Plane | a flat surface that extends forever |
| Point | a location in space |
| Ray | A part of a line that starts at one endpoint and extends forever |
| angle | a figure formed by two rays |
| vertex | the point where two sides intersect |
| acute vertex | a vertex that measures less than 90 |
| Complementary Angles | two angles whose measures add up to 90 |
| obtuse angle | a angle whose measure is greater than 90 but less than 180 |
| right angle | an angle that measures 90 |
| straight angle | an angle that measures 180 |
| supplementary | Two angles that have the sum of 180 |
| adjacent angles | Angles in the same plane that have a common vertex |
| corresponding angles | A pair of angles formed by a transversal and two line |
| parallel line | lines in a plane that do not intersect |
| perpendicular lines | lines in a plane that intersect |
| skew lines | lines that lie in different planes |
| transversal | a line that intersects two or more lines |
| vertical angles | A pair of opposite congruent angles |
| arc | a part of a circle named by the endpoints |
| center of a circle | a point in a circle that is equal distance away from all parts of the circle |
| central angle | a angle with a vertex at the center of a circle |
| chord | a line segment with endpoints on a circle |
| circle | The set of all points in a plane |
| diameter | a line segment that passes through a circle |
| radius | a line segments with one endpoint in the circle on the edge |
| sector | a region enclosed by two radia |
| poloygon | closed plane figure formed gy three or more line segments that intersect only at thier endpoints |
| regular polygon | a polygon with congruent sides and angle |
| acute triangle | a triagle that has at least one acute angle |
| obtuse triangle | an triangle that has an angle whose measure is greater than 90 but less than 180 |
| right triangle | an triangle that has an angle whose measure is 90 |
| isosacles triangle | a triangle that has at least two congruent sides. |
| paralellogram | A quadrilateral with two pairs of equal sides |
| rectangle | A parallelogram with four right angles |
| square | a rectagle with four congruent sides |
| rhombus | a parrelgram with four equal sides |
| trapoziod | A quadlatertical with exactly four equal sides |
| Side | Side |
| image | a figure resulting from a transformation |
| line of reflection | a line that a figure is flipped across |
| reflection | a transformation of a figure |
| rotation | a figure that is turned around a point |
| transformation | a change in size or position |
| translation | a movement or slide across a figure |
| asymmetry | not identical on either side of a central line |
| center | the point of which a figure is rotated |
| line of symmetry | a “mirror” line of symmetry |
| line symmetry | identical on either side of a central line |
| rotational symmetry | can be rotated less than 360 and coincide with the original figure |
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