1.1

• Space - Set of all points
• Collinear - Points that lie on the same line
• Concurrent lines - 3 or more ines that meet at one point
• Parallel lines - Lines that never intersect
• Angle bisector - Line that divides an angle into two equal parts
• Perpendicular lines - Lines that form right angles when they cross
• Angle bisector - Line that divides an angle into two equal parts
• Median - Line from vertex to midpoint of opposite side
• Transversal - A line that cuts across other lines or figures
• Interior angles - Angles formed by the transversal inside the parallel lines
• Transversal - A line that cuts across other lines or figures
• Noncollinear - Doesn't lie on the same line
• Coplanar - Lies on the same plane
• Noncoplanar - Doesn't lie on the same plane
• Plane - Two dimensional figure
• Point - Dot
• Line - a straight line with 2 arrow heads
• Definition - Statement that clarrifies or explains a meaning of a word or phrase
• Segment - part of a line between two points
• The sum of all interior angles is equal to two right angles (360 degrees).
• Midpoint - Divides a segment into two congruent s
• Bisecto - intersects a segment at its midpoint
• Ray - has 1 endpoint and infinitely extends in one direction
• Circle - Set of all points at a lgiven distance from a given point
• Diameter - Distance across the circle through its center
• Center - Given point
• Radius - Distance from the center to any point on circle.
• Secant - lines that intersects the circle at 2 points
• Tangent - line thaat intersects the circle at one point
• Arc - part of a circle bounded by two radii
• Chord - line segment joining two points on the same circle
• Sector - Region bounded by an arc, chord, and radius
• Circumference - distance around the edge of a circle
• Minor - Smaller Angle
• Major - Bigger Angle
• Inscribed Angle - Vertex is on the circle
• Major segment- Bounded by majjor arc and chord
• Semicircle - Half of a circle
• Central angle - vertex at center, radii as sides
• Quadrant - Quarter of a circle