Basic geometry and measurement
This Basic geometry and measurement course is a refresher of length, area, perimeter, volume, angle measure, and transformations of 2D and 3D figures. If you are learning the content for the first time, consider using the grade-level courses for more in-depth instruction.
14 units173 videos12 hours
Learn it live with a class on Puzzicle · Teachers: use it with your class
Unit 1: Intro to area and perimeter
Count unit squares to find area
Area formula intuition
Multiply to find area
Area and the distributive property
Decompose figures to find area
Perimeter intro
Perimeter word problems
Comparing area and perimeter
Unit 2: Intro to mass and volume
Unit 3: Measuring angles
Parts of plane figures
Angle introduction
Angle types
Understanding angle measurement
Measuring angles
Decomposing angles
Unit 4: Plane figures
Quadrilaterals introduction
Classifying triangles
Parallel and perpendicular
Classifying geometric shapes
Lines of symmetry
Unit 5: Units of measurement
Estimating length
Converting units of mass
Converting units of volume
Converting units of length
Conversion word problems (larger to smaller)
Converting to larger or smaller
Converting metric units word problems
Unit 6: Volume
Volume with unit cubes
Volume of rectangular prisms
Decompose figures to find volumes
Volume word problems
Unit 7: Coordinate plane
Intro to the coordinate plane
Coordinate plane word problems
Points in all four quadrants
Problem solving in all quadrants
Unit 8: Decomposing to find area
Area of parallelograms
Area of triangles
Area and perimeter on the coordinate plane
Unit 9: 3D figures
Rectangular prism volume with fractions
Surface area with nets
Finding surface area
Slicing geometric shapes
Unit 10: Circles, cylinders, cones, and spheres
Area and circumference of circles
Area and circumference of fractions of circles
Volume of cylinders, spheres, and cones
Unit 11: Angle relationships
Vertical, complementary, and supplementary angles
Missing angles problems
Parallel lines and transversals
Triangle angles
Angles in a triangle sum to 180° proof ✓ Check-ins4:28
Isosceles & equilateral triangles problems ✓ Check-ins6:27
Triangle exterior angle example ✓ Check-ins6:03
Worked example: Triangle angles (intersecting lines) ✓ Check-ins4:55
Worked example: Triangle angles (diagram) ✓ Check-ins5:42
Triangle angle challenge problem ✓ Check-ins8:37
Triangle angle challenge problem 2 ✓ Check-ins6:05
Unit 12: Scale
Scale copies
Unit 13: Triangle side lengths
Constructing triangles
Pythagorean theorem
Pythagorean theorem application
Pythagorean theorem and distance between points
Unit 14: Geometric transformations
Transformations intro
Reflections
Properties & definitions of transformations
Dilations
Learn this with a class
With a class on Puzzicle this course runs as a timetable of live study parties: your batch watches together and answers the check-ins, sometimes with a teacher leading.
Course content © Khan Academy, used under CC BY-NC-SA. See this course on Khan Academy.