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C2_Chapter 10
Chapter 10 Vocabulary
| Question | Answer |
|---|---|
| Angle | Two rays with a common endpoint form an angle. The rays and vertex are used to name the angle. |
| Acute Angle | An angle with a measure greater than 0° and less than 90°. |
| Acute Triangle | A triangle having three acute angles. |
| Adjacent Angles | Angles that have the same vertex, share a common side, and do not overlap. |
| Circle Graph | A type of statistical graph used to compare parts of a whole. |
| Complementary Angles | Two angles are complementary if the sum of their measures is 90o |
| Congruent Angles | Angles that have the same measure. |
| Congruent Figures | Figures with equal corresponding sides of equal length and corresponding angles of equal measure. |
| Congruent Segments | Segments having the same measure. |
| Corresponding Sides | Congruent or proportional sides of similar figures. |
| Decagon | A polygon having ten sides. |
| Degree | Degree |
| Equilateral Triangle | A triangle having three congruent sides. |
| Hexagon | A polygon having six sides. |
| Heptagon | A polygon having seven sides. |
| Indirect Measurement | Finding a measurement by using similar triangles and writing a proportion. |
| Isosceles Triangle | A triangle having at least two congruent sides. |
| Line of Symmetry | A line that divides a figure into two halves that are reflections of each other. |
| Line of Reflection | The line over which a figure is reflected. |
| Line Symmetry | Figures that match exactly when folded in half have line symmetry. |
| Nonagon | A polygon having nine sides. |
| Octagon | A polygon having eight sides. |
| Obtuse Angle | Any angle that measures greater than 90° but less than 180°. |
| Obtuse Triangle | A triangle having one obtuse angle. |
| Parallelogram | A quadrilateral with opposite sides parallel and opposite sides congruent. |
| Pentagon | A polygon having five sides. |
| Quadrilateral | A closed figure having four sides and four angles. |
| Right Angle | An angle that measures 90°. |
| Right Triangle | A triangle having one right angle. |
| Regular Polygon | A polygon that has all sides congruent and all angles congruent. |
| Reflection | A type of transformation in which a figure is flipped over a line of symmetry. |
| Rhombus | A parallelogram having four congruent sides. |
| Scalene Triangle | A triangle having no congruent sides. |
| Similar Figures | Figures that have the same shape but not necessarily the same size. |
| Straight Angle | An angle that measures exactly 180°. |
| Supplementary Angles | Two angles are supplementary if the sum of their measures is 180°. |
| Tessellation | A repetitive pattern of polygons that fit together with no holes or gaps. |
| Transformation | A movement of a geometric figure. |
| Translation | One type of transformation where a geometric figure is slid horizontally, vertically, or both. |
| Trapezoid | A quadrilateral with one pair of parallel sides. |
| Triangle | A polygon that has three sides and three angles |
| Vertex | A vertex of an angle is the common endpoint of the rays forming the angle. |
| Vertical Angles | Opposite angles formed by the intersection of two lines. |
Created by:
Mrs_Irish
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