math 1-1/1-5
Terms
undefined, object
copy deck
- protactor
- is used to measure angles
- angle
- the figure formed by the union of two rays with the same initial point
- midpoint
- of the a segment is the point that divides or bisects the segment into two congruenct segments.
- point
- has no dimension, can be represented by a dot, is named using capitol letters
- line segment
- consist of two points of the line, called end points and all points of the line that are between the two points.
- Adjacent angles
- share a common vertex and side but have no common interior points
- coplanar points
- lie on the same plane
- Congruent angles
- have the same measure
- ray
- consists of an intial point ( or end point) and all points of the line which are on the same side of the intial point
- line
- extendes in one direction , can be represented by a "straight line" with two arrow heads to indecate it extends in two directions without end.
- plane
- extends in two dimensions, can be represented by a shape that looks like a table top or wall.
- conjecture
- is an unproven statement based on observations
- postulates
- statements that are acepted without proof
- collinear points
- lie on the same line
- theorems
- statements that are proved
- geometric construction
- is a geometric drawing that uses a limited set of tools, usually a compass and a straight edge.
- degrees
- the units of measurments
- segment bisector
- a segment, ray, line or plane that intersects a segment at its midpoint