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### 43 Cards in this Set

• Front
• Back
 right angle a 90 degree angle (the size of the corner of a sheet of paper) cube a special solid with 6 faces A polygon with 5 sides pentagon faces A flat polygon or the sides of a solid. scalene triangle all sides and angles of the triangle are different width How wide a figure is vertices 3 or more lines that meet at a point. height how tall an object is equilateral triangle all 3 sides and angles are the same Three Dimensional Figures Solid figures that have height, width, and depth plane all the points that form a flat surface length how far back an object goes intersecting lines lines that meet or cross each other pi 3.14, the ratio of the circumference of a cicle to the length of its diameter A polygon with 6 sides hexagon rectangular prism a solid point an exact location and shows where something stops width How wide a 3D figure is edges when 2 faces meet they form an edge. perpendicular lines that intersect and form square corners (straight up and down) A polygon with 7 sides heptagon acute angle an angle less than 90 degrees (smaller than the corner of a sheet of paper) A polygon with 8 sides octagon quadrilateral any shape that has 4 sides a polygon with 9 sides nonagon ray part of a line that has 1 endpoint A polygon with 10 sides decagon line a straight path that goes on forever in both directions flip to turn a figure over or change its position isosceles triangle triangle in which 2 sides are the same diameter a chord that passes through the center of the circle parallel lines 2 lines that run side by side and never cross each other slide to move a figure without changing its size or shape obtuse angle greater than 90 degrees (larger than the corner of a piece of paper) turn to rotate a figure around a vertex (POSITION CHANGED, SIZE AND SHAPE DO NOT) line segment part of a line and it has 2 endpoints degree the unit name for measuring angles polygon is a closed figure chord a line that connects 2 points on the circle triangle has 3 sides and 3 angles congruent figures that have the same shape and size radius A line segment that connects the center with a point on the circle prism a solid figure that has 2 congruent faces