# equation line   24 videos

• #### Line Segments

##### GeometryGeometry Building Blocks

How to define and label a line segment.

line endpoint points
• #### Constructing a Perpendicular at a Point on a Line

##### GeometryConstructions

How to construct a perpendicular line at a point on a line.

perpendicular point on the line construct
• #### Parallel and Skew Lines

##### GeometryGeometry Building Blocks

How to mark parallel lines, how to show lines are parallel, and how to compare skew and parallel lines.

parallel lines skew lines coplanar collinear
• #### Parallel Planes and Lines

##### GeometryGeometry Building Blocks

How to identify parallel lines, a line parallel to a plane, and two parallel planes.

parallel lines skew plane
• #### Converse of Parallel Lines Theorem

##### GeometryReasoning, Diagonals, Angles and Parallel Lines

How to take the converse of the parallel lines theorem.

parallel lines theorem transversal
• #### Constructing a Perpendicular to a Line

##### GeometryConstructions

How to find the shortest distance between a point and a line.

construction midpoint perpendicular equidistant shortest distance to a line
• #### Proportional Segments Between Parallel Lines

##### GeometrySimilarity

How to prove two triangles are similar using a line parallel to a base.

parallel lines triangles similar triangles proportion
• #### Three Undefined Terms: Point, Line, and Plane

##### GeometryGeometry Building Blocks

How to describe and label point, line, and plane. How to define coplanar and collinear.

point line plane coplanar collinear
• #### Cyclic Quadrilaterals and Parallel Lines in Circles

##### GeometryCircles

How to prove that opposite angles in a cyclic quadrilateral are congruent; how to prove that parallel lines create congruent arcs in a circle.

inscribed angles cyclic quadrilaterals parallel lines alternate interior angles
• #### Duplicating a Line Segment

##### GeometryConstructions

How to duplicate a line segment using a compass and straightedge.

congruent segments construction compass straightedge
• #### Constructing Parallel Lines

##### GeometryConstructions

How to construct parallel lines using three different methods.

transversal duplicating angles corresponding alternate interior alternate exterior
• #### Equation of a Circle

##### GeometryPythagorean Theorem

How to derive the equation for a circle using the distance formula.

• #### Solving Equations with Squares and Cubes

##### GeometryVolume

How to solve equations using square roots or cube roots.

square root cube root
• #### Vertical Angles

##### GeometryReasoning, Diagonals, Angles and Parallel Lines

How to define and identify vertical angles.

vertex intersecting lines congruent
• #### Corresponding Angles

##### GeometryReasoning, Diagonals, Angles and Parallel Lines

How to define corresponding angles and their special properties.

parallel lines angles congruence
• #### Rays

##### GeometryGeometry Building Blocks

How to identify, define, and label rays and opposite rays.

ray line endpoint opposite rays
• #### Alternate Interior Angles

##### GeometryReasoning, Diagonals, Angles and Parallel Lines

How to define alternate interior angles and their special properties.

parallel lines angles congruence interior transversal
• #### Alternate Exterior Angles

##### GeometryReasoning, Diagonals, Angles and Parallel Lines

How to define alternate exterior angles and their special properties.

parallel lines angles congruence exterior transversal
• #### Same Side Interior and Same Side Exterior Angles

##### GeometryReasoning, Diagonals, Angles and Parallel Lines

How to describe same side interior and same side exterior angles and their special properties.

parallel lines angles congruence interior exterior transversal
• #### Constructing an Angle Bisector

##### GeometryConstructions

How to define and construct an angle bisector.

construction perpendicular equidistant shortest distance to a line bisector