rectangular form   4 videos

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  Volume of Cylinders

  Geometry Volume

  How to calculate the volume of any cylinder.

  volume base area height circle area rectangular prism
• 

  Radii to Tangents

  Geometry Circles

  How to define a tangent line; how to determine the angle a radius to a tangent forms.

  tangent radius right angle point outside the circle perpendicular
• 

  Calculating the Midpoint

  Geometry Geometry Building Blocks

  How to find the midpoint of a segment with endpoints in rectangular coordinates, How to write the midpoint formula.

  endpoint coordinate plane
• 

  Angles in Semicircles and Chords to Tangents

  Geometry Circles

  How to prove that an angle inscribed in a semicircle is a right angle; how to solve for arcs and angles formed by a chord drawn to a point of tangency.

  inscribed angle semicircle tangent chord intercepted arc