- Construction – a drawing using only two tools a compass and a straight edge
- Segment – a part of a line that has two endpoints
- Bisect – to divide into 2 equal parts
- Midpoint – a point that divides a segment into two equal, or congruent, parts
- Congruent – same measure or length
- Segment Bisector – a line, segment, or ray that goes through the midpoint of a segment
- Radius – the distance from the center to the side of a circle
- Ray – A ray begins at a point and goes on forever in one direction
- Angle – Region between two rays or the amount of rotation about a fixed point
- Vertex – the common endpoint of the two rays that serve as the sides of an angle.
- Perpendicular Lines – two lines that intersect to form a right angle.
- Perpendicular Bisector – A perpendicular line or segment that passes through the midpoint of a segment.
- Point – a location in space
- Parallel Lines – Two lines are parallel if they lie in the same plane and they do not intersect.
- Coordinate Plane – A two-dimensional region determined by a pair of axes and that uses numerical values to represent the location of an object.
- X-Axis – The horizontal number line on the Cartesian coordinate plane.
- Y-Axis – The vertical number line on the Cartesian coordinate plane.
- Origin – the point of intersection of the vertical and horizontal axes of a coordinate plane
- Quadrant – One of the four regions on a Coordinate plane formed by the intersection of the x-axis and the y-axis.
- Ordered Pair – A pair of numbers, (x, y), that indicate the position of a point on a Cartesian plane.
- Coordinate – An ordered pair, (x,y), that locates a point in the plane.
- Transformation – The mapping, or movement, of all the points of a figure in a plane according to a common operation.
- Translation – a transformation that “slides” each point of a figure the same distance in the same direction.
- Rotation – A transformation that turns a figure about a fixed point at a given angle and a given direction.
- Reflection – A transformation that “flips” a figure over a mirror or reflection line.
- Dilation – A transformation that changes the size of an object, but not the shape.
- Pre-Image – the original figure before any transformations have taken place
- Image – The result of a transformation.
- Cross Section – the intersection of a three-dimensional figure with a plane
- Ratio – A comparison of two quantities that have the same unit of measure.
- Similar Figures – Figures that have the same shape but not necessarily the same size.
- Congruent Figures – Figures that have the same shape and are the same size.
- Scale Factor – The ratio of corresponding lengths of the sides of two similar figures.
You don’t need to draw the ones below.
- Angle – two segments that share a common endpoint.
- CAD – Computer-Aided Design
- Freehand – without the aid of any tool.
- Parallelogram – Four sides, opposite sides equal, non-right angles
- Proportion – Two or more equal ratios.
- Ratio – Compare two numbers using division
- Rectangle – Four sides, right angles, opposite sides equal
- Rhombus – Four equal sides, non-right angles
- Segment – portion of a line that begins and ends.
- Square – Four sided figure, right angles, equal sides
- Triangle – Three sided figure
- Vertex – point of angle where the 2 segments meet
From Georgia Virtual Learning