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Download Term Picture Definition Notation Acute Angle Adjacent angles Angle
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Transcript
Term Picture Definition Classify by angle measure: Acute Angle Adjacent angles Angle An angle whose measure is less than 90° Two angles that share a common vertex and side, but have no common interior points. A figure formed by two rays with a common endpoint. Notation Angle bisector Between Circle Collinear Points A ray that divides an angle into two angles that are congruent When three points are collinear, then one point is between the other two. The set of all points in a plane at a fixed distance from a fixed point. Points that lie on the same line Congruent segments Line segments that have the same length Complementary Two angles whose measures have the sum 90° Coplanar Points that lie in the same plane Distance along a line J The length of a segment 12 L ̅̅̅̅̅̅̅ ̅̅̅̅ ( JL=12 ) Distance around an arc The length of part of the circumference of a circle Equal lengths Congruent segments have the same measure. Intersection Line The set of points that two or more geometric figures have in common. An undefined geometric term that has one dimension. It extends without end in two directions. ̂ AB=TO ̅̅̅̅ ⋂ ⃡ Line Segment A portion of a line that consists of a defined beginning and endpoint and all the points in between Linear Pair Two adjacent angles whose noncommon sides are opposite rays A point that bisects a segment into two congruent segments. Midpoint Classify by angle measure: Obtuse Angle An angles whose measure is greater than 90° ̅̅̅̅ ̅̅̅̅ ̅̅̅̅ or Opposite rays Parallel line Perpendicular lines/segments Point ⃡ two rays with a common endpoint that means “combined form a line with” A line that is a constant distance from another line or plane ⃡ ⃡ A line that intersects a line, a line segment, ray or plane to form a right angle ̅̅̅̅̅ ̅̅̅̅̅ An undefined term that has no dimensions. It is usually represented by a dot A The point where two lines or segments meet. Point of Intersection An undefined term that has two dimensions. It extends without end in both dimensions Plane Part of a line that consists of a point called an endpoint and all points on the line that extend in one direction Ray Classify by angle measure: Right angle An angle with measure equal to 90° ⃡ ⋂ ̅̅̅̅ A point, ray, line, segment, or plane that that ̅̅̅̅ intersects a segment at its midpoint. ⋂ Segment bisector Classify by angle measure: Straight angle An angle with measure equal to 180° Supplementary angles Two angles whose measures have the sum 180° Vertical angles Two angle whose sides form two pairs of opposite rays ̅̅̅̅ so ̅̅̅̅