• #### Area of Kites and Rhombuses - Problem 2

##### Math›Geometry›Area
How to find the length of a diagonal in a kite given the area and the length of the other diagonal.
• #### Angle Bisectors and Opposite Side Ratios - Problem 2

##### Math›Geometry›Similarity
How to find a missing length, given the length of the opposite side in a triangle.
• #### Radii to Tangents - Problem 3

##### Math›Geometry›Circles
How to calculate the length of a segment drawn from the center of a circle to a point outside the circle, given the length of the tangent segment to that circle.
• #### Center and Apothem of Regular Polygons - Problem 1

##### Math›Geometry›Area
How to find the length of an apothem in a regular polygon given a side length and the number of sides.
• #### Using the Pythagorean Theorem to find a Missing Hypotenuse - Problem 2

##### Math›Trigonometry›Pythagorean Theorem
How to calculate the length of a diagonal in a rectangle given its side lengths.
• #### Using the Pythagorean Theorem to find a Missing Hypotenuse - Problem 2

##### Math›Geometry›Pythagorean Theorem
How to calculate the length of a diagonal in a rectangle given its side lengths.
• #### The Ellipse - Problem 9

##### Math›Precalculus›Conic Sections
Write the equation for an ellipse not centered at the origin from the length of the axes and the center.
Tags:
• #### Area of Parallelograms - Problem 2

##### Math›Geometry›Area
How to find the base length of a parallelogram given the area.
• #### Secants - Concept

##### Math›Geometry›Circles
How to define a secant; how to find the length of various secants in circles.
• #### Wavelength

##### Science›Physics›Vibration and Waves
How to understand and find the length of waves.
Tags:
wavelength
• #### The Ellipse - Problem 10

##### Math›Algebra 2›Conic Sections
Using the length of the axes and the center to write the equation for an ellipse not centered at the origin.
Tags:
• #### The Ellipse - Problem 9

##### Math›Algebra 2›Conic Sections
Write the equation for an ellipse not centered at the origin from the length of the axes and the center.
Tags:
• #### Secants - Problem 3

##### Math›Geometry›Circles
How to find the length of intersecting secant segments.
• #### The Ellipse - Problem 10

##### Math›Precalculus›Conic Sections
Using the length of the axes and the center to write the equation for an ellipse not centered at the origin.
Tags:
• #### Area of Trapezoids - Problem 3

##### Math›Geometry›Area
How to find the area of a trapezoid where the base lengths, one side, and two angles are given.
• #### Trapezoid Midsegment Properties - Concept

##### Math›Geometry›Polygons
How to define the midsegment of a trapezoid, calculate its length, and relate it to a triangle midsegment.
• #### Area of Trapezoids - Problem 1

##### Math›Geometry›Area
How to find the length of a base in a triangle where the area, other base, and height are known.
• #### Area of Parallelograms - Problem 3

##### Math›Geometry›Area
How to find the height of a parallelogram given two base lengths and a different height.
• #### Area of Trapezoids - Problem 2

##### Math›Geometry›Area
How to find the area of a trapezoid given the lengths of the four sides and the height of the trapezoid.
• #### Area of Parallelograms - Problem 1

##### Math›Geometry›Area
How to calculate the area of a parallelogram, given the lengths of the sides and a height.