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area of parallelograms (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the area of a parallelogram, which is a quadrilateral (a four-sided figure), in which opposite s...
area of rectangles using sums and differences (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the area of a figure that's the compilation of multiple rectangles, by finding the area of the l...
area of rectangles (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the area of a rectangle. Since a rectangle is a quadrilateral with four interior right-angles, w...
perimeter of rectangles (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the perimeter of a rectangle. Remember that 'perimeter' is just the distance around the outside ...
area of trapezoids (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the area of a trapezoid, which is just a quadrilateral in which two of the opposite sides are pa...
pythagorean inequalities (KristaKingMath)
► My Geometry course:
In this video we'll learn how to use pythagorean inequalities (inequalities derived from the pythagorean theorem) to say whether or no...
45-45-90 triangles (KristaKingMath)
► My Geometry course:
In this video we'll learn about the special things that happen in the specific instance of a 45-45-90 triangle, which is a triangle wh...
area of a triangle (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the area of a triangle. Since a triangle is always half of a parallelogram, the area of the tria...
finding perimeter using the pythagorean theorem (KristaKingMath)
► My Geometry course:
In this video we'll learn how to use the pythagorean theorem to find the lengths of the sides of a right triangle, and then add the si...
circumference of a circle (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the circumference of a circle, which is the same as the perimeter of the circle. The only value ...
degree measure of an arc (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the degree measure of an arc. If the arc is the intercepted arc of an interior angle of the circ...
30-60-90 triangles (KristaKingMath)
► My Geometry course:
In this video we'll learn about the special properties of 30-60-90 triangles, which are triangles that have interior angle measures of...
intersecting secants and tangents with the vertex on, inside and outside the circle (KristaKingMath)
► My Geometry course:
In this video we'll learn how find angle measures between intersecting secant and tangent lines of a circle, when the intersection of ...
tangent lines of circles (KristaKingMath)
► My Geometry course:
In this video we'll learn how to use what we know about the tangent line of a circle (the line that touches the circle at a single poi...
nets of prisms (KristaKingMath)
► My Geometry course:
In this video we'll learn how to draw the nets of right rectangular prisms, including the net of a cube. A net is just the shape of th...
surface area to volume ratio of prisms (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the ratio between the surface area of a rectangular prism and the volume of a rectangular prism,...
surface area of prisms (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the surface area of right rectangular prisms. Since opposite faces of the prism are congruent, w...
volume of prisms (KristaKingMath)
► My Geometry course:
In this video we'll learn how find the volume of right rectangular prisms. To find the volume, we'll just multiply the length by the w...
nets of pyramids (KristaKingMath)
► My Geometry course:
In this video we'll learn how to draw the nets of pyramids, including a square pyramid, a triangular pyramid, and a pentagonal pyramid...
surface area of regular pyramids (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the surface area of regular pyramids. Since all of the lateral faces of the pyramid are congruen...
volume of pyramids (KristaKingMath)
► My Geometry course:
In this video we'll learn how find the volume of pyramids. To find the volume, we'll always use the same volume formula.
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The isosceles triangle theorem is actually really simple! (KristaKingMath)
► My Geometry course:
In this video we'll learn about the isosceles triangle theorem, which tells us that, when we have an isosceles triangle (a triangle in...
naming simple geometric figures (KristaKingMath)
Line segments in 3D: Finding the midpoint! (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the midpoint of a line segment that's lying in three dimensions.
The endpoints of the line segm...
intersecting chords of circles (KristaKingMath)
► My Geometry course:
In this video we'll learn about what happens when two chords intersect each other inside a circle. Remember that a chord is just a lin...
equation, center and radius, and intercepts of a circle (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the equation of a circle, the center and radius of a circle, and the intercepts of a circle (the...
intersecting tangent and secant lines of circles (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find congruent angles between intersecting tangent lines, intersecting secant lines, or an intersecti...
nets of cylinders (KristaKingMath)
► My Geometry course:
In this video we'll learn how to draw the nets of cylinders. A net is just the shape of the two-dimensional sheet that can be folded i...
length of a line segment (KristaKingMath)
inscribed angles of circles (KristaKingMath)
► My Geometry course:
In this video we'll learn how to measure inscribed angles of circles, which are angles that have their vertex on the circle, and their...
volume of cylinders (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the volume of cylinders. To do this, we'll find the area of the base of the cylinder, which will...
distance between two points in three dimensions (KristaKingMath)
► My Vectors course:
In this video we'll learn how to find the distance between two points in three-dimensional coordinate space. If we're given both points...
nets of cones (KristaKingMath)
► My Geometry course:
In this video we'll learn how to draw nets of right circular cones. A right circular cone is a cone whose base is a circle and that ha...
surface area of cones (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the surface area of right circular cones. A right circular cone is a cone whose base is a circle...
volume of cones (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the volume of circular cones. A circular cone is a cone whose base is a circle. We'll use a volu...
surface area of cylinders (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the surface area of cylinders, which we'll do by finding the area of the base (the area of a cir...
surface area of spheres (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the surface area of spheres. The formula we always use to find surface area only requires us to ...
area of parallelograms (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the area of a parallelogram, which is a quadrilateral (a four-sided figure), in which opposite s...
volume of spheres (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the volume of spheres. We'll always use the same volume formula, which only requires us to know ...
area of rectangles using sums and differences (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the area of a figure that's the compilation of multiple rectangles, by finding the area of the l...
Are the triangles similar? Can you prove it?! (KristaKingMath)
► My Geometry course:
In this video we'll learn how to use the SSS (side-side-side), SAS (side-angle-side), and AA (angle-angle) theorems to prove that two ...
area of rectangles (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the area of a rectangle. Since a rectangle is a quadrilateral with four interior right-angles, w...
reducing fractions and cancellation (KristaKingMath)
► My Pre-Algebra course:
In this video we learn how to reduce a fraction to its lowest terms by canceling common factors from the numerator and denominator....
perimeter of rectangles (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the perimeter of a rectangle. Remember that 'perimeter' is just the distance around the outside ...
rationalize an imaginary denominator with conjugate method (KristaKingMath)
► My Algebra 2 course:
In this video we learn how to rationalize the denominator of a fraction that has imaginary numbers in it. When the denominator is the...
area of trapezoids (KristaKingMath)
► My Geometry course:
In this video we'll learn how to find the area of a trapezoid, which is just a quadrilateral in which two of the opposite sides are pa...
solving systems of equations with cramer's rule (KristaKingMath)
► My Algebra 2 course:
The three most common methods for solving a system of linear equations are elimination, substitution, and graphing. In this video we'...
pythagorean inequalities (KristaKingMath)
► My Geometry course:
In this video we'll learn how to use pythagorean inequalities (inequalities derived from the pythagorean theorem) to say whether or no...
Which functions pass the VERTICAL LINE TEST?!! (KristaKingMath)
► My Precalculus course:
The vertical line test is a visual test you can use to say whether or not a graph represents a function.
Remember that a function ...
45-45-90 triangles (KristaKingMath)
► My Geometry course:
In this video we'll learn about the special things that happen in the specific instance of a 45-45-90 triangle, which is a triangle wh...
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