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This page provides a list of educational videos related to 4.G.A. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to 4.G.A.
Symmetry for 4th Graders
By Brooke Wert
Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts.
Lines, Rays, Line Segments, Points, Angles, Union & Intersection - Geometry Basic Introduction
By The Organic Chemistry Tutor
basic introduction into lines, rays, line segments, points, and angles. It also explains the difference between the union and intersection symbols and contains a few practice problems associated with it.
[4.G.3-1.0] Lines of Symmetry - Common Core Standard
By Freckle education
Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts.
Math Antics - Points, Lines, & Planes
By mathanatics
Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.
Acute Triangle - YourTeacher.com - Geometry Help
By yourteachermathhelp
In this lesson students learn to classify triangles as acute (all angles acute) right (one angle right) or obtuse (one angle obtuse). Students also learn that the sum of the measures of the angles of a triangle is 180 degrees and students are asked to use this formula to find the measures of missing angles in given triangles.
Categorizing triangles | Geometry | 4th grade | Khan Academy
By Khan Academy
Let's practice categorizing triangles in this example exercise.
Identifying parallel and perpendicular lines | Geometry | Khan Academy
By KhanAcademy
identify parallel and perpendicular lines
Flipped Classroom Lines and Angles
By Megan Priole
Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines.
Introduction to Symmetry
By mathwithlarry
Introductory lesson concerning symmetry. Instructor Larry explains the general idea of symmetry and gives examples with letters in this clip. The instructor uses computer software for demonstration.
Recognizing angles
By Khan Academy
Let's do a few example exercises in which you recognize and identify the type of given angle. This is a lot of fun!
Recognizing parallel and perpendicular lines
By Khan Academy
Let's now apply what we learned and do an exercise together in which we identify parallel and perpendicular lines.This is great practice.
Recognizing parallel and perpendicular lines
By Khan Academy
Do the two lines intersect or stay apart? If they intersect, do they do so thereby creating a 90 degree angle? These are the kinds of questions we ask ourselves when we learn about parallel and perpendicular lines.
Point Line Plane
By Pete Anderson
The instructor uses an electronic sketchpad to explain and demonstrates the fundamental concepts (undefined terms)of geometry: point line plane.
Parallel and Perpendicular Lines, Transversals, Alternate Interior Angles, Alternate Exterior Angles
By The Organic Chemistry Tutor
parallel and perpendicular lines in addition to transversals and all the angles that are formed by it such as alternate interior and exterior angles.
Categorizing geometric shapes: practice examples | 4th grade | Khan Academy
By Khan Academy
Watch and do these example exercises along with us. Remember what you have learned about perpendicular lines, right, obtuse, and acute triangles.
Intro to lines line segments and rays
By Khan Academy
Let's get familiar with the difference between lines line segments and rays. Hint: a ray is somewhere between a line and a line segment!