390 likes | 676 Views
Distance formula. Slope. Midpoint Formula. Point slope formula of a line. Equation of a line. y = mx +b. m is slope b is y-intercept. Slope. Parallel Lines. Parallel lines have equal s lopes. Perpendicular Lines. Perpendicular lines have opposite reciprocal slopes.
E N D
y = mx +b m is slope b is y-intercept
Where: Center: (h, k) and radius =
Finding the equation of a circle given two endpoints of the diameter
Use midpoint to find the center • Use distance (between center and one endpoint) to find the radius • Plug into equation of a circle
Find slope Flip and change the sign of the slope from step 1. Find the midpoint. Plug answers from step 2 and 3 into point slope
Find the midpoint of both diagonals If they match then… It is a parallelogram because diagonals bisect
Use DISTANCE to find the length of all four sides If Both sets of opposite sides are = then… It is a rectangle because both sets of opposite sides are congruent
Use DISTANCE to find the length of all four sides If ALL sides are = then… It is a rhombus because all sides are congruent
Use DISTANCE to find the length of all four sides and SLOPE of 2 adjacent sides If ALL sides are = and the slopes are opposite reciprocals then… It is a square because all sides are congruent and adjacent sides are perpendicular
Find the SLOPE of all four sides If two slopes are = and two are then… It is a trapezoid because there is only one set of opposite parallel sides.
Find the SLOPE of all four sides and the DISTANCE of the non-parallel sides If two slopes are = and two are and the non-parallel sides are = then… It is an isosceles trapezoid because there is only one set of opposite parallel sides and the legs are congruent.