click below
click below
Normal Size Small Size show me how
geometry
Question | Answer |
---|---|
angle | Two rays that have the same endpoint. |
vertex | The common endpoint of the two rays in an angle. |
protractor | An instrument used to and draw angles. |
acute angle | An angle whose measure is between 0º and 90º. |
right angle | An angle whose measure is 90º. |
obtuse angle | An angle whose measure is between 90º and 180º. |
straight angle | An angle measuring 180º. |
line | A straight path of points that goes on forever in two directions. |
ray | Part of a line that has one endpoint and extends forever in one direction. |
parallel lines | In a plane, lines that never cross and stay the same distance apart. |
intersecting lines | Lines that pass through the same point. |
perpendicular lines | .Two lines that intersect to form square corners or right angles |
point | An exact location in space. |
line segment | Part of a line having two endpoints. |
degrees (º) | A unit of measure for angles and temperature. |
polygon | A closed plane figure made op of line segments. |
regular polygon | A polygon that has sides of equal length and angles of equal measures. |
triangle | A polygon with 3 sides. |
quadrilateral | A polygon with 4 sides. |
pentagon | A polygon with 5 sides. |
hexagon | A polygon with 6 sides. |
octagon | A polygon with 8 sides. |
equilateral triangle | A triangle whose sides all have the same length. |
isosceles triangle | A triangle with two sides of the same length. |
scalene triangle | A triangle in which no sides have the same length. |
right triangle | A triangle in which one angle is a right angle. |
acute triangle | A triangle whose angles are all acute angles. |
parallelogram | A quadrilateral with both pairs of opposite sides parallel. |
trapezoid | A quadrilateral that has exactly one pair of parallel sides. |
rectangle | A parallelogram with four right angles. |
rhombus | A parallelogram with all sides of the same length. |
square | A rectangle with all sides the same length. |
generalization | A general statement. Example: A generalization about rectangles applies to all rectangles. |