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8th CCSSM GEO PT 1
8th GEOMETRY COMMON CORE PART 1 - COMPLETE
Term | Definition |
---|---|
line of reflection | the line in which a figure is flipped when the figure undergoes a reflection |
center of rotation | The point about which a figure is turned when a figure undergoes a rotation. |
clockwise | Moving in the direction of the hands on a clock. |
counterclockwise | Moving in the opposite direction to the hands on a clock. |
congruence | ≅, figures that are exactly the same shape and size |
dilations | To resize something. In general English it means to make larger., but in Mathematics it means to make larger or smaller. |
image | a representation of the external form of a person or thing in art |
exterior angle | The angle between any side of a shape, and a line extended from the next side. |
interior angle | An angle inside a shape |
alternate interior angles | When two lines are crossed by another line (which is called the Transversal), the pairs of angles, on opposite sides of the transversal, but inside the two lines |
angle-angle criterion | when two pairs of corresponding angles of two triangles are equal, the triangles are similar. |
deductive reasoning | A form of reasoning by which each conclusion follows from the previous one; an argument is built by conclusions that progress towards a final statement. |
adacent | Lying next to each other. |
complementary | Two Angles are _____________________ when they add up to 90 degrees (a Right Angle) . They don't have to be next to each other, just so long as the total is 90 degrees. |
corresponding angles | When two lines are crossed by another line (which is called the Transversal), the angles that are in matching corners |
legs | the two sides of a triangle that meet at a right angle |
cone | a solid with one circular base |
cylinder | A solid object with two congruent circular bases that lie in parallel planes |
height | The vertical distance from top to bottom; |
hypotenuse | the side of a right triangle that is opposite the right angle; It is also the longest side of the right-angled triangle |