- Print the notecards
- Fold each page in half along the solid vertical line
- Cut out the notecards by cutting along each horizontal dotted line
- Optional: Glue, tape or staple the ends of each notecard together

front 1 an exact spot in space | back 1 Point |

front 2 straight path that continues infinitely in two directions | back 2 Line |

front 3 part of a line with two endpoints | back 3 Line segment |

front 4 part of a line with one endpoint and one arrow that goes on forever | back 4 Ray |

front 5 an endless flat surface | back 5 Plane |

front 6 lines that never intersect | back 6 parallel |

front 7 lines that cross at a 90 degree angle | back 7 perpendicular |

front 8 lines that pass through the same point | back 8 intersecting lines |

front 9 90 degrees | back 9 a right angle |

front 10 less than 90 degrees | back 10 acute angle |

front 11 greater than 90 degrees but less than 180 degrees | back 11 obtuse angle |

front 12 180 degrees | back 12 a straight angle |

front 13 same exact measurement(s) | back 13 congruent |

front 14 Two angles whose sum is 180° | back 14 supplementary angles |

front 15 Two angles whose sum is 90°. | back 15 Complementary angles |

front 16 the pairs of opposite angles made by two intersecting lines (they will be congruent) | back 16 vertical angles |

front 17 angles that are right next to each other | back 17 adjacent angles |

front 18 two angles in the same relative position at each intersection in a transversal (where a straight lines cross two parallel lines). These angles are congruent. | back 18 corresponding angles |

front 19 parallel lines are intersected by another line, the intersecting line is called a ______________________ | back 19 transversal |

front 20 Each pair of these angles are inside the parallel lines, and on opposite sides of the transversal (these angles are congruent) | back 20 alternate interior angles |

front 21 a pair of angles on the outer side of each of those two parallel lines but on opposite sides of the transversal (these angles are congruent) | back 21 Alternate Exterior Angles |

front 22 the two inside angles on the same side in a traversal will equal _____ | back 22 180 degrees (same-side interior angles) |

front 23 where two or more line segments or rays meet. | back 23 vertex |

front 24 a ruler with no markings on it | back 24 straight edge |

front 25 tool used to draw circles and arcs (parts of circles) | back 25 compass |

front 26 size of a 2D surface | back 26 area |

front 27 distance around a 2D shape | back 27 perimeter |

front 28 line segment with end points on a circle | back 28 chord |

front 29 distance around a circle | back 29 circumference |

front 30 Figures with corresponding angles that are equal and corresponding sides that are proportional | back 30 similar |

front 31 A chord that passes through the center of the circle from one edge to another | back 31 diameter |

front 32 A line segment from the center of a circle to the edge | back 32 radius |

front 33 The total area on all sides (surfaces) of a figure | back 33 surface area |

front 34 The movement of objects in the coordinate plane where image is either similar to or congruent to the pre-image. | back 34 transformation |

front 35 A Slide, Each vertex moves the same distance in the same directions | back 35 translation |

front 36 A turn, Each vertex is rotated the number of degrees around a rotation point | back 36 rotation |

front 37 A Flip, Each vertex is flipped across a line of reflection to result in a mirror image. | back 37 reflection |

front 38 a line, segment or ray that goes through the midpoint of a segment | back 38 bisector |

front 39 A point on a line segment that divides it into two equal parts. | back 39 midpoint |

front 40 a part of the circumference of a circle or other curve | back 40 arc |

front 41 The amount of space an object takes up. | back 41 volume |

front 42 a quadrilateral with four right angles and 4 congruent sides | back 42 square |

front 43 a quadrilateral with four right angles | back 43 rectangle |

front 44 a quadrilateral with four congruent sides | back 44 rhombus |

front 45 A quadrilateral with two sets of congruent lines that are adjacent to each other. | back 45 kite |

front 46 A triangle with all acute angles | back 46 acute triange |

front 47 A triangle with one obtuse angle and two acute angles | back 47 obtuse triangle |

front 48 A triangle with one 90 degree angle | back 48 right triangle |

front 49 A triangle with all congruent sides | back 49 equilateral triangle |

front 50 A triangle with at least two congruent sides | back 50 isosceles |

front 51 A triangle with no congruent sides | back 51 scalene triangle |

front 52 quadrilateral with both pairs of opposite sides are parallel | back 52 parallelogram |

front 53 A closed figure formed by three or more line segments that do not cross. | back 53 polygon |

front 54 four sided polygon | back 54 four sided polygon |

front 55 A polygon with congruent sides and angles | back 55 regular polygon |

front 56 a quadrilateral with exactly one pair of parallel sides | back 56 trapezoid |

front 57 A set of points in the same plane equal distance from the center. | back 57 circle |

front 58 A set of all points in space that are the same distance from the center point. | back 58 sphere |

front 59 A 3D object where the rectangular faces are perpendicular to the base shape. The base can be any shape. | back 59 right prism |

front 60 3D object with a circular base and one vertex | back 60 cone |

front 61 A prism with triangular faces that meet at one point, a vertex and base that is a polygon. | back 61 pyramid |

front 62 A prism with two congruent parallel bases that are circles. | back 62 cylinder |

front 63 A rectangular prism with faces that are all squares | back 63 cube |

front 64 A line that intersects a curve (or circle) in at least two distinct points. | back 64 Secant |

front 65 A line that touches a curve (or circle) at exactly one point. | back 65 Tangent (to a circle) |

front 66 An angle whose vertex is the center O of a circle and whose legs (sides) are radii intersecting the circle in two distinct points A and B. | back 66 Central Angle |

front 67 *Secondary 2 and higher only* The ratio between the side opposite of an angle and the hypotenuse. | back 67 *Secondary 2 and higher only* Sine |

front 68 *Secondary 2 and higher only* The ratio between the side adjacent to an angle and the hypotenuse. | back 68 *Secondary 2 and higher only* Cosine |

front 69 *Secondary 2 and higher only* The ratio between the side opposite of an angle and the side adjacent to the angle. | back 69 *Secondary 2 and higher only* Tangent (as a triangle ratio) |

front 70 *Secondary 2 and higher only* Exterior Angles Theorem | back 70 *Secondary 2 and higher only* The exterior angle of a triangle is equal to the sum of the two opposite interior angles |