Jalan Lewis Geometry Blog

The first set of notations, with the “minus one” exponent, lists the inverse sine, the inverse cosine, and the inverse tangent. The second set of notations, with… Read more “Trig ratios 10/1/18”

“Trigon” is Greek for triangle , and “metric” is Greek for measurement. The trigonometric ratios are special measurements of a right triangle  (a triangle with one angle  measure). Remember that the two… Read more “Trig ratios 10-26-18”

In mathematics the Pythagorean theorem, is a fundamental relation in Euclidean geometry  among the three sides of a right triangle . It states that the square of the hypotenuse  (the side opposite… Read more “Pythagorean theorem”

first you are going to want to multiply 12*12 since it’s 12 to the 2nd power and do the same with the 9 in parenthesis multiply 9*9… Read more “Major grade E-Portfolio 10-11-18”

Points and lines are two of the most fundamental concepts in Geometry, but they are also the most difficult to define. We can describe intuitively their characteristics,… Read more “8-16-18 Points / Lines / Planes”

A rotation is a transformation in which the object is rotated about a fixed point. The direction of rotation can be clockwise or anticlockwise.The fixed point in which the rotation… Read more “9-27-18 Rotations”

In planar geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the… Read more “Angle relationships 9/6/18”

  Two angles are complementary if the sum of their angles equals 90o. If one angle is known, its complementary angle can be found by subtracting the… Read more “supplementary and complimentary angles 9/6/18”

My name is jalan Lewis and I’m from Thomaston,Alabama. What I like to do for fun is play video games. The only sport I play is football.… Read more “Personal e portfolio 8-23-18”