Get ready for Geometry
Get ready for high school geometry! Learn the skills that will set you up for success in congruence, similarity, and triangle trigonometry; analytic geometry; conic sections; and circles and solid geometry.
4 units84 videos7 hours
Learn it live with a class on Puzzicle · Teachers: use it with your class
Unit 1: Get ready for congruence, similarity, and triangle trigonometry
Solving proportions
Scale copies
Exploring scale copies ✓ Check-ins1:52
Identifying corresponding parts of scaled copies ✓ Check-ins2:31
Corresponding points and sides of scaled shapes ✓ Check-ins2:55
Identifying scale copies ✓ Check-ins4:04
Identifying scale factor in drawings ✓ Check-ins1:26
Identifying values in scale copies ✓ Check-ins3:49
Scale drawings
Vertical, complementary, and supplementary angles
Angles between intersecting lines
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
Approximating irrational numbers
Unit 2: Get ready for analytic geometry
Polygons on the coordinate plane
Drawing a quadrilateral on the coordinate plane example ✓ Check-ins1:32
Area of a parallelogram on the coordinate plane ✓ Check-ins2:08
Coordinates of a missing vertex ✓ Check-ins2:41
Example of shapes on a coordinate plane ✓ Check-ins2:22
Dimensions of a rectangle from coordinates ✓ Check-ins3:51
Coordinates of rectangle example ✓ Check-ins2:22
Parallelogram on the coordinate plane ✓ Check-ins5:17
Two-variable linear equations intro
Slope
Horizontal & vertical lines
Forms of two-variable linear equations
Unit 3: Get ready for conic sections
Factoring quadratics intro
Factoring quadratics with perfect squares
Perfect square factorization intro ✓ Check-ins5:19
Factoring perfect squares ✓ Check-ins4:54
Identifying perfect square form ✓ Check-ins4:37
Factoring perfect squares: negative common factor ✓ Check-ins3:52
Factoring perfect squares: missing values ✓ Check-ins2:39
Factoring perfect squares: shared factors ✓ Check-ins4:26
Unit 4: Get ready for circles and solid geometry
Area and circumference of circles
Slicing geometric shapes
Volume and surface area word problems
Volume of cylinders, spheres, and cones
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.