Geometry Flashcards
Terms : Hide Images [1]
5583870190 | Collinear | Points that lie on the same line | ![]() | 0 |
5583870191 | Linear Pair | A pair of adjacent angles whose noncommon sides are opposite rays. | ![]() | 1 |
5583870192 | Supplementary angles | Two angles whose sum is 180 degrees | ![]() | 2 |
5583870193 | Complementary angles | Two angles whose sum is 90 degrees | ![]() | 3 |
5583870194 | Vertical Angles | A pair of opposite congruent angles formed by intersecting lines | ![]() | 4 |
5583870195 | Angle addition postulate | If P is in the interior of | ![]() | 5 |
5583870196 | Segment addition postulate | If B is between A and C, then AB + BC = AC | ![]() | 6 |
5583870197 | Congruent | Having the same size and shape | 7 | |
5583870198 | Angle bisector | a ray that divides an angle into two congruent angles | ![]() | 8 |
5583870199 | Segment bisector | a segment, ray, line, or plane that intersects a segment at its midpoint | ![]() | 9 |
5583870200 | Midpoint | A point that divides a segment into two congruent segments | ![]() | 10 |
5583870201 | postulate | something accepted as true without proof; an axiom | 11 | |
5583870202 | theorem | A mathematical statement which we can prove to be true | 12 | |
5583870203 | inductive reasoning | A type of logic in which generalizations are based on a large number of specific observations. Emphasis on experimentation and scientific method | 13 | |
5583870204 | deductive reasoning | reasoning in which a conclusion is reached by stating a general principle and then applying that principle to a specific case (The sun rises every morning; therefore, the sun will rise on Tuesday morning.) | 14 | |
5583870205 | parallel lines | lines in the same plane that never intersect | ![]() | 15 |
5583870206 | conditional statements | A statement that can be written in if-then form. | 16 | |
5583870207 | hypothesis | A testable prediction, often implied by a theory An educated guess | 17 | |
5583870208 | conclusion | A summary based on evidence or facts | 18 | |
5583870209 | triangle sum theorem | The sum of the measures of the interior angles of a triangle is 180 degrees | ![]() | 19 |
5583870210 | Transitive property | If a=b and b=c, then a=c | ![]() | 20 |
5583870211 | Substitution property | If a=b, then a can be substituted for b in any equation or expression | 21 | |
5583870212 | Line segment | A part of a line with two endpoints | ![]() | 22 |
5583870213 | 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. | ![]() | 23 |
5583870214 | converse of a conditional statement | When the hypothesis and conclusion are switched. The converse of p ➝ q is q ➝ p. A statement formed by interchanging the hypothesis and the conclusion in a conditional statement. | 24 | |
5583870215 | transversal | a line that intersects two or more coplanar lines at different points | 25 | |
5583870216 | corresponding angles | Angles formed by a transversal cutting through 2 or more lines that are in the same relative position. | ![]() | 26 |
5583870217 | same side interior angles | two interior angles on the same side of the transversal | ![]() | 27 |
5583870218 | same side exterior angles | two exterior angles on the same side of the transversal | ![]() | 28 |
5583870219 | alternate interior angles | angles between 2 lines and on opposite sides of a transversal | ![]() | 29 |
5583870220 | alternate exterior angles | Angles that lie outside a pair of lines and on opposite sides of a transversal. | ![]() | 30 |
5583870221 | Acute triangle | A triangle that contains only angles that are less than 90 degrees. | ![]() | 31 |
5583870222 | Obtuse triangle | A triangle with one angle that is greater than 90 degrees. | ![]() | 32 |
5583870223 | Right triangle | a triangle with one right angle | ![]() | 33 |
5583870224 | Isosceles triangle | a triangle with at least two congruent sides | ![]() | 34 |
5583870225 | Equilateral triangle | A triangle with three congruent sides | ![]() | 35 |
5583870226 | Regular triangle | All congruent sides and angles | ![]() | 36 |
5583870227 | Scalene triangle | a triangle with no congruent sides | ![]() | 37 |
5583870228 | Base angles | Two angles that have the base as a side. | 38 | |
5583870229 | Vertex angle | The angle formed by the legs of an isosceles triangle. | 39 | |
5583870230 | Point slope equation of a line | y-y1=m(x-x1) | ![]() | 40 |
5583870231 | slope formula | y2-y1/x2-x1 | ![]() | 41 |
5583870232 | slope intercept form of a line | y=mx + b (m is the slope, b is the y intercept point) | ![]() | 42 |
5583870233 | y-intercept | The point where the graph crosses the y-axis | ![]() | 43 |
5583870234 | altitude of a triangle | the perpendicular segment from a vertex to the opposite side or to the line that contains the opposite side | ![]() | 44 |
5583870235 | perpendicular bisector of a triangle | A line that is perpendicular to a segment at its midpoint. | ![]() | 45 |
5583870236 | 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. | ![]() | 46 |
5583870237 | SSS postulate | If three sides of one triangle are congruent to three sides of another triangle, then the triangles are congruent. | ![]() | 47 |
5583870238 | ASA postulate | If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the triangles are congruent. | ![]() | 48 |
5583870239 | 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. | ![]() | 49 |
5583870240 | 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. | ![]() | 50 |