IM Geometry Unit 1A

Vocabulary terms from IM Geometry unit 1A constructions with images and definitions

circle

circle

The set of all points equidistant from a center point

line segment

The set of all points on a straight line with two endpoints

radius

line segment which connects the center of a circle to its circumference

parallel

Two or more lines in the same plane that are at equal distance from each other and never meet

conjecture

A reasonable guess that you are trying to either prove or disprove

congruent

Figures in Geometry that are the same shape and same size

midpoint

The point equidistant from two endpoints on a straight line

perpendicular

lines that meet at 90 degree (right) angles

angle bisector

The line passing through the vertex of an angle that divides it into two smaller congruent angles

perpendicular bisector

The line intersecting a segment at its midpoint and creates 90 degree (right) angles

inscribed

A figure fully enclosed within another figure whose vertices all exist on the other shape

regular polygon

A closed figure with all straight congruent sides and all angles congruent

construction

The process in Geometry of creating figures and diagrams using a straightedge and compass (to draw circles & arc marks) without the use of numerical measurements

Construction: copy an angle

Construction: perpendicular line

Construction: perpendicular bisector

Construction: angle bisector

Construction: equilateral triangle

Construction: inscribed equilateral triangle

Construction: inscribed regular hexagon