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| An angle that measures less than 90 degrees. |
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| A triangle in which each of the three angles is acute. |
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| A figure that is formed by two rays with the same endpoint. |
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| A line segment that connects two points on a circle. |
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| A closed figure in which every point is the same distance from a given point called the center of the circle. |
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| A solid that has a circular face and come to a point called the vertex. |
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| Figures that have the same size and the same shape. |
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| A solid figure that has six square faces of equal size. |
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| A solid that has parallel, congruent circular faces. |
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| A line segment that connects two points on the circle and passes through the center. |
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| The line segment where two faces of a solid figure meet. |
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| The point at either end of a line segment or the beginning point of ray. |
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| A triangle that has three congruent sides. |
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| A flat surface of a solid figure. |
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| A polygon with six sides. |
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| Lines that meet or cross at a common point. |
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| A triangle that has two congruent sides. |
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| A straight path that extends in opposite directions with no endpoints. |
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| A part of a line that has two endpoints. |
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| Describes whether a figure can be folded in half and its two parts match exactly. |
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| The line along which a figure can be folded so that the two halves match exactly. |
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| A flat pattern that can be folded to make a solid. |
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| An angle that measures more than 90 degrees and less than 180 degrees. |
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| A triangle that has one obtuse angle. |
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| Lines that lie in the same plane and do not intersect. They are always the same distance apart. |
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| A quadrilateral in which both pairs of opposite sides are parallel. |
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| The distance around the outside of a figure. |
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| Two lines or line segments that cross or meet to form right angles. |
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| A simple closed plane figure made up of three or more line segments. |
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| A device used to measure and draw angles. |
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| A solid figure whose base can be any polygon and whose faces are triangles. |
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| A polygon with four sides. |
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| A segment that connects the center of a circle to any point on the circle. |
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| Part of a line that starts at an endpoint and goes on forever in one direction. |
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| A parallelogram with four right angles. |
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| A solid figure with six faces that are rectangles. |
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Definition
| A solid figure whose base is a rectangle and whose faces are triangles. |
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| A move that makes a figure face in the opposite direction. It is also called a flip. |
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Definition
| A parallelogram with all four sides the same length. |
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Definition
| An angle made when two line segments meet to form a square corner. It measures 90 degrees. |
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| A triangle that has one right angle. |
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| A move that turns a figure around a point. |
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Definition
| A triangle with all sides of different length. |
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Definition
| Figures that have the same shape but not necessarily the same size. |
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| A solid figure that is shaped like a round ball. |
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Definition
| A polygon with four right angles and four congruent sides. |
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Definition
| A pryamid that has a square base. |
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Definition
| An action that slides a figure in a straight line. |
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Definition
| A polygon with three sides and three angles. |
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Definition
| A prism that has 2 triangular and 3 rectangular faces. |
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Definition
| A pryamid whose base is a triangle. |
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Definition
| A point common to the two sides of an angle. |
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Definition
Acute angle
Measures less than 90 degrees |
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Definition
Cone
A cone has 1 vertex and one face |
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Definition
Cube
A cube is a 3 dimentional figure 6 square sides |
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Definition
Cylindar
A cylindar is a 3 dimensional figure with 2 circular faces, 1 curved face, and 2 edges |
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Definition
Intersecting lines
lines that meet at one point |
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Definition
Isosclese Triangle
A triangle with 2 equal sides |
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Definition
Line
A set of points that goes into infinity in both directions |
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Definition
Obtuse Angle
An angle that measures greater than 90 degrees |
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Definition
Octagon
An octagon has 8 sides |
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Definition
Parallel Line Segments
segments that are always the same distance apart. |
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Definition
Parallelagram
A parallelagram has 2 sets of parallel sides |
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Definition
Pentagon
A pentagon has 5 sides |
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