--tangent, sine and cosine ratios

--using a trigonometric ratio to calculate the lengths of the other sides of a right triangle when an angle and one side length are known

--using a trigonometric ratio to calculate an angle of a right triangle when two side lengths are known

--using the mnemonic acronym SOHCAHTOA

Grade Level:

Middle

High

Length:

00:29

--similar triangles

--finding an unknown height in a similar triangle

--tangent ratios of varying angles

--hypotenuse, adjacent, and opposite sides

--using a calculator to find the tangent ratio of any angle

--using tangent ratios to find an unknown adjacent or opposite side length

Grade Level:

Middle

High

Length:

00:22

--formulas for a parallelogram (square, rectangle, and rhombus)

--formulas for a trapezoid, triangle, and circle

Grade Level:

Middle

High

Length:

00:27

The program explains how triangles can be classified by side length and by angles, introducing the mathematical names. It then names and illustrates the different types of convex quadrilaterals. Study guides are available from VEA website. www.veavideo.com

Grade Level:

Middle

High

Length:

00:24

The program demonstrates the following constructions in the context of a student creating a mobile to hang above a baby's cot: * Bisecting an angle * Perpendicular bisector of a line * Constructing a triangle using three known side lengths * Determine the center of gravity by constructing medians * Determine the inscribed circle of a triangle by constructing the angle bisectors * Determine the

Grade Level:

Elementary

Middle

Length:

00:30