Question | Answer |
Transversal | A line that intersects two coplanar lines at two distinct points. |
Alternate Interior Angles | Non-adjacent angles that lie opposite sides of a transversal and between the intersected lines. |
Same-side Interior Angles | Angles that lie on the same side of a transversal and between the intersected lines. |
Corresponding Angles | Angles that lie on the same-side of the transversal in the same relative positions from the intersection points. |
Two-column Proof | A convincing argument using deductive reasoning written with statements and reasons aligned in columns |
Alternate Exterior Angles | Non-adjacent angles that lie on opposite sides of a transversl and outside the intersected lines. |
Same-side Exterior Angles | Angles that lie on the same side of a transversal and outside the intersected lines. |
Flow proof | A convincing argument using deductive reasoning the arrows show the logical connections between statements. |
Acute Triangle | A triangle whose largest angle is less than 90 degrees in size. |
Right Triangle | A triangle with a 90 degree angle. |
Obtuse Triangle | A triangle whose largest angle is more than 90 degrees in size. |
Equiangular Triangle | A figure with all equal angles. |
Equilateral Triangle | A figure with all equal sides. |
Isosceles Triangle | A triangle with two congruent sides. |
Scalene Triangle | A triangle with no congruent sides. |
Exterior Angle of a Polygon | An angle formed by a side and an extension of an adjacent side. |
Remote Interior Angles | Two angles that two nonadjacent interior angles corresponding to each exterior angle of a triangle. |
Polygon | A closed plane figure comprised of sides that intersect at their endpoints no two of which are collinear. |
Convex Polygon | A closed figure with diagonals on the inside. |
Concave Polygon | A closed figure with diagonals containing points on the outside of the polygon. |
Regular Polygon | A polygon that has equal sides and equal angles |