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Math Unit_3
Geometry Explorations and the American Tour Vocabulary
Question | Answer |
---|---|
Acute Angle | An angle with a measure greater than 0 degrees and less than 90 degrees. |
Adjacent Angles | Angles that are next to each other; adjacent angles have a common side and a common vertex, but no other overlap. |
Congruent | Having exactly the same shape and size .Two 2-dimensional figures are congruent if they match exactly when one is placed on top of the other. |
Diameter | A line segment that passes through the center of a circle (or sphere) and has endpoints on the circle (or sphere). The diameter of a circle or sphere is twice the length of its radius. |
Equilateral Triangle | A triangle with all three sides the same length. In an equilateral triangle, all three angles have the same measure. |
Obtuse Angle. | An angle with a measure greater than 90 degrees and less than 180 degrees. |
Radius | A line segment from the center of a circle (or sphere) to any point on the circle (or sphere). |
Right Angle | An angle with a measure of 90 degrees. |
Tessellation | An arrangement of shapes that covers a surface completely without overlaps or gaps. Also called tiling. |
Vertical (Opposite) Angles | The angles made by intersecting lines that do not share a common side. Vertical angles have equal measures. |