Geometry Area of mathematics dealing with solids, surfaces, points, lines, curves, & angles and their relationships in space.

GeometryArea of mathematics dealing with solids, surfaces, points, lines, curves, & angles and

their relationships in space.

Geometry- Lines

• I CAN…

• draw points, lines, line segments, and rays

• tell the difference between parallel lines and perpendicular lines

• CCSS.Math.Content.4.G.A.1Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.

LINEA straight path that goes on forever in both directions.

ARE THESE LINES?

WHY?

ARE THESE LINES?

WHY?They are not STRAIGHT!

POINTA location on a line marked by a dot.

POINT

Line Segmentthe part of a line between two points

The space between the two points is a line segment

Parallel LinesTwo lines or line segments in a plane that stay theSame distance apart & will cross.NEVER

Parallel LinesTwo lines next to each other that will NEVER cross.

Parallel LinesTwo lines next to each other that will NEVER cross.

Parallel LinesTwo lines next to each other that will NEVER cross.

Parallel LinesTwo lines next to each other that will NEVER cross.

Parallel LinesTwo lines next to each other that will NEVER cross.

Parallel LinesTwo lines next to each other that will NEVER cross.

Perpendicular LinesLines or segments that meet or intersect (cross) to form right angles, or a square corner.

Perpendicular LinesTwo lines that cross & form right angles, or a square corner.

Perpendicular LinesTwo lines that cross and form right angles, or a “T” shape.

Perpendicular LinesTwo lines that cross and form right angles, or a “T” shape.

Perpendicular LinesTwo lines that cross and form right angles, or a “T” shape.

Perpendicular LinesTwo lines that cross and form right angles, or a “T” shape.

Perpendicular LinesTwo lines that cross and form right angles, or a “T” shape.

Intersecting LinesLines or segments that meet or cross at one point, but do NOT always from right angles (90°)- square corner

Perpendicular lines are intersecting but intersecting lines are NOT perpendicular.

Intersecting LinesTwo lines that cross but do NOT always from right angles.

Perpendicular lines are intersecting but intersecting lines are NOT perpendicular.

Intersecting LinesTwo lines that cross but do NOT always from right angles.

Perpendicular lines are intersecting but intersecting lines are NOT perpendicular.

LET’S PLAY GEOMETRY SIMON SAYS

When I say Simon Says Be…….

Acute Angle: Make an acute angle with your armsObtuse Angle: Make an obtuse angle with your arms.Right Angle: Make a right angle with your arms. Straight Angle: Hold your arms out to the side. Parallel: Raise hands in the air like a “goal” sign. Perpendicular: Make a T or Cross with your Arms. Intersecting: Make an X with your arms – No right angles!Line – Arms out to the side with both fingers pointingRay – Arms out to the side with one fist and one finger Line Segment – Arms out to the side with two fists.

LET’S PRACTICE!GET YOUR CLICKER READY!

A. PerpendicularB. Parallel

C. Intersecting

A. PerpendicularB. Parallel

C. Intersecting

A. PerpendicularB. Parallel

C.Intersecting

A. PerpendicularB. Parallel

C. Intersecting

A. PerpendicularB. Parallel

C. Intersecting

A. PerpendicularB. Parallel

C. Intersecting

A. PerpendicularB. Parallel

C. Intersecting

A. PerpendicularB. Parallel

C. Intersecting

A. PerpendicularB. Parallel

C. Intersecting

A. PerpendicularB. Parallel

C. Intersecting

A. PerpendicularB. Parallel

C. Intersecting

A. Perpendicular.B. Parallel

C. Intersecting

PerpendicularParallel

Intersecting.

A. PerpendicularB. Parallel

C. Intersecting

A. PerpendicularB. Parallel

C. Intersecting

A. PerpendicularB. Parallel

C. Intersecting

PerpendicularParallel

Intersecting

A. PerpendicularB. Parallel

C. Intersecting

GOOD JOB!

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