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Unit 4 Math
Circles,Lines,And Angles
| Question | Answer |
|---|---|
| Ray | A part of a line the has one endpoint and extends without end in the other direction |
| Angle | A figure formed by two rays or two endpoints with a common endpoint |
| Line | A straight path that goes on forever in opposite directions |
| Perpendicular | Lines,line segments,or rays are perpendicular if they form a right angle |
| Parallel | The same distance apart at every point |
| Obligue | Lines that are not parallel or perpendicular |
| Intresect | To cut or divide by passing through or across |
| Protractor | A tool used to measure angles |
| Degree | A unit for measuring angles and temperatures |
| Right Angle | A angle that measures 90 degrees |
| Straight Angle | A angle of 180 degrees |
| Opposite angle | when two lines intersect |
| Verticle angle | Pairs of opposite angles formed by intersecting lines |
| supplementary angles | angles having a sum of 180 degrees |
| complementary angles | Angles having a sum of 90 degrees |
| Polygon | 2d shape with straight sidess |
| Congruent | same size and same shape |
| Isosceles trisngle | A triangle with at least two congruent sides |
| Equilateral triangle | A triangle with all equal sides |
| Scalene triangle | A triangle with no equal sides |
| Acute triangle | A triangle with acute angle |
| Obtuse triangle | A triangle with one obtuse angle |
| Right triangle | A triangle with one right angle |
| Right trapezoid | A trapezoid with at least one right angle |
| Circle | A plane figure that forms a closed path so that all the points on the path are the same distance from a point called the center |
| Reflex Angle | A angle greater then 180 degrees |