4.G.1.a
Identify, create, and describe points, lines, line segments, rays, angles, parallel lines, perpendicular lines, and intersecting lines.
Example Problems
One line passes through the points and . Another line passes through points and .
Are the lines parallel, perpendicular, or neither?
Are the lines parallel, perpendicular, or neither?
One line passes through the points and . Another line passes through points and
.
Are the lines parallel, perpendicular, or neither?
.
Are the lines parallel, perpendicular, or neither?
One line passes through the points and . Another line passes through points and .
Are the lines parallel, perpendicular, or neither?
Are the lines parallel, perpendicular, or neither?
Khan Academy ResourcesLines, line segments, and rays reviewConstructing angles reviewAngle basics reviewParallel and perpendicular lines reviewAngle types reviewIdentify points, lines, line segments, rays, and anglesAngle typesDraw parallel and perpendicular linesRecognize angles in figuresTypes of angles by measureDraw anglesName anglesIdentify parallel and perpendicular linesAngle basicsLines, line segments, & raysAngles: introductionParallel & perpendicular linesTerms & labels in geometryRecognizing anglesNaming anglesDrawing acute, right and obtuse anglesConstructing anglesIdentifying an angleClassifying shapes by line and angles typesParallel & perpendicular lines introDrawing parallel line segments

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