Geometry 3 Chapter 2
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18 terms
Terms | Definitions |
|---|---|
acute angle | an angle whose degree measure is greater than 0 and less than 90 |
alternate exterior angles | angles on opposite sides of a transversal, outside the two intersected lines. |
alternate interior angles | angles on opposite sides of a transversal, inside the two intersected lines. |
angle bisector | a ray that divides an angle into two congruant angles |
bisector | a line tht divides an angle or a segment into two equal parts |
bisects | divides into two equal parts |
compass | a tool used to draw circles and arcs |
complementary angles | two angles whose measures have a sum of 90 degrees. |
congruent | geometric figures that have the same size, the same shape, and the same measurements. |
corresponding angles | two angles that lie on the samer side of a transversal, one angle is interior and the other is exterior |
degrees | a unit of measure for angles, ech of which is equal to 1/360th of a circle |
midpoint | a point that divides a line segment into two equal parts |
obtuse angle | an angle whose measure is greater than 90 degrees but less than 180 degrees. |
protractor | a tool used in geometry to draw and measure angles |
straight angle | an angle with measure equal to 180 degrees. |
straightedge | a tool used to draw straight lines |
supplementary angles | two angles that have measures whose sum is 180 degrees |
transversal | a line that intersects two or more lines |
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