Terms : Hide Images
| 7157202245 | Collinear | Points that lie on the same line |  | 0 |
| 7157202246 | Linear Pair | A pair of adjacent angles whose noncommon sides are opposite rays. |  | 1 |
| 7157202247 | Supplementary angles | Two angles whose sum is 180 degrees |  | 2 |
| 7157202249 | Vertical Angles | A pair of opposite congruent angles formed by intersecting lines |  | 3 |
| 7157202250 | Angle addition postulate | If P is in the interior of  4 | | |
| 7157202251 | Segment addition postulate | If B is between A and C, then AB + BC = AC |  | 5 |
| 7157202252 | Congruent | Having the same size and shape |  | 6 |
| 7157202253 | Angle bisector | a ray that divides an angle into two congruent angles |  | 7 |
| 7157202254 | Segment bisector | a segment, ray, line, or plane that intersects a segment at its midpoint |  | 8 |
| 7157202255 | Midpoint | A point that divides a segment into two congruent segments |  | 9 |
| 7157202260 | parallel lines | lines in the same plane that never intersect |  | 10 |
| 7157202261 | conditional statements | A statement that can be written in if-then form. | 11 | |
| 7157202262 | hypothesis | A testable prediction, often implied by a theory An educated guess | 12 | |
| 7157202263 | conclusion | A summary based on evidence or facts | 13 | |
| 7157202264 | triangle sum theorem | The sum of the measures of the interior angles of a triangle is 180 degrees |  | 14 |
| 7157202265 | Transitive property | If a=b and b=c, then a=c |  | 15 |
| 7157202266 | Substitution property | If a=b, then a can be substituted for b in any equation or expression |  | 16 |
| 7157202267 | Line segment | A part of a line with two endpoints |  | 17 |
| 7157202268 | Line | 1. A long thin mark on a surface. 2. A continuous extent of length, straight or curved, without breadth or thickness; the trace of a moving point. 3. Long, narrow mark or band. |  | 18 |
| 7157202270 | transversal | a line that intersects two or more coplanar lines at different points | 19 | |
| 7157202271 | corresponding angles | Angles formed by a transversal cutting through 2 or more lines that are in the same relative position. |  | 20 |
| 7157202272 | same side interior angles | two interior angles on the same side of the transversal |  | 21 |
| 7157202273 | same side exterior angles | two exterior angles on the same side of the transversal |  | 22 |
| 7157202274 | alternate interior angles | angles between 2 lines and on opposite sides of a transversal |  | 23 |
| 7157202275 | alternate exterior angles | Angles that lie outside a pair of lines and on opposite sides of a transversal. |  | 24 |
| 7157202276 | Acute triangle | A triangle that contains only angles that are less than 90 degrees. |  | 25 |
| 7157202277 | Obtuse triangle | A triangle with one angle that is greater than 90 degrees. |  | 26 |
| 7157202278 | Right triangle | a triangle with one right angle |  | 27 |
| 7157202279 | Isosceles triangle | a triangle with at least two congruent sides |  | 28 |
| 7157202280 | Equilateral triangle | A triangle with three congruent sides |  | 29 |
| 7157202281 | Regular triangle | All congruent sides and angles | | 30 |
| 7157202282 | Scalene triangle | a triangle with no congruent sides |  | 31 |
| 7157202284 | Vertex angle | The angle formed by the legs of an isosceles triangle. | 32 | |
| 7157202286 | slope formula |  | 33 | |
| 7157202287 | slope intercept form of a line |  | 34 | |
| 7157202288 | y-intercept | The point where the graph crosses the y-axis |  | 35 |
| 7157202289 | altitude of a triangle | the perpendicular segment from a vertex to the opposite side or to the line that contains the opposite side |  | 36 |
| 7157202290 | perpendicular bisector of a triangle | A line that is perpendicular to a segment at its midpoint. |  | 37 |
| 7157202291 | SAS postulate | If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent. |  | 38 |
| 7157202292 | SSS postulate | If three sides of one triangle are congruent to three sides of another triangle, then the triangles are congruent. |  | 39 |
| 7157202294 | AAS postulate | If two angles and a non-included side of one triangle are congruent to two angles and a non-included side of another, then the two triangles are congruent. |  | 40 |
| 7157202295 | HL Postulate | If a hypotenuse and leg of one right triangle are congruent to the corresponding hypotenuse and leg of a second right triangle, then the triangles are congruent. |  | 41 |
| 7157220232 | Quadrilateral | A flat shape with four straight sides. (closed) |  | 42 |
| 7157221731 | rhombus | A quadrilateral where all sides have equal length. It is a type of parallelogram. |  | 43 |
| 7157222220 | kite | A quadrilateral that has two pairs of sides that are equal in length but not all 4 are equal. |  | 44 |
| 7157222941 | square | A quadrilateral where all sides have equal length, and every interior angle is a right angle (90 degrees). Special rectangle. |  | 45 |
| 7157223607 | rectangle | A quadrilateral where all angles are right angles (90°). Also opposite sides are parallel and of equal length. |  | 46 |
| 7157224422 | trapezoid | A quadrilateral that has a pair of opposite sides parallel. |  | 47 |
| 7157233873 | regular polygon | A polygon is regular when all angles are equal and all sides are equal (otherwise it is "irregular"). |  | 48 |
| 7157234599 | irregular polygon | A polygon that does not have all sides equal and all angles equal. |  | 49 |
| 7157237810 | Parallelogram | A quadrilateral with two pair of parallel sides |  | 50 |
| 7157241578 | perpendicular lines | Lines that intersect to form right angles |  | 51 |
| 7157243506 | adjacent angles | Two angles that share a common side and have the same vertex |  | 52 |
| 7157247126 | coplanar | points that lie on the same plane |  | 53 |
| 7157248148 | complementary angles | Two angles whose measures add to 90 degrees. |  | 54 |
| 7157248964 | distance | How far it is from one point to another |  | 55 |
| 7157251752 | ray, opposite rays | a part of a line that starts at one endpoint and extends forever |  | 56 |
| 7162803717 | Pythagorean Theorem | In a right angled triangle: the square of the hypotenuse is equal to. the sum of the squares of the other two sides. |  | 57 |
| 7162806937 | Chord | a straight line segment whose endpoints both lie on the circle. |  | 58 |
| 7162809724 | Tangent | is a line that touches the circle at exactly one point, never entering the circle's interior. |  | 59 |
