Curated Video
Identifying Line Symmetry in Irregular Polygons
In this video, the teacher explains how to identify line symmetry in irregular polygons. They discuss the three options for line symmetry - horizontal, vertical, and diagonal - and emphasize the importance of having matching parts when...
ProTeachersVideo
Teaching Astronomy and Space: Models of the Solar System - Earth, Sun and Moon
Physics teacher and solar astronomer Simon Foster explores how we developed our understanding of the universe and uses our changing models of the solar system to explain how science works.
On location on top of a volcano in the Canary...
Getty Images
Liverpool, Tate Liverpool Pan across Albert Dock to Tate entrance. Entrance from opposite side of dock, boat in foreground. Tate entrance; 2004; short sequence.
Liverpool, Tate Liverpool Pan across Albert Dock to Tate entrance. Entrance from opposite side of dock, boat in foreground. Tate entrance; 2004; short sequence.
Curated Video
Trump Questions Integrity of Voting System
RESTRICTION SUMMARY: AP CLIENTS ONLYSHOTLIST:POOL - AP CLIENTS ONLYManheim, Pennsylvania - 1 October 2016++SOUNDBITES SEPARATED BY BLACK FRAMES++1. Donald Trump, US Republican presidential candidate, arrives on stage2. SOUNDBITE...
Curated Video
Trump Again Questions Integrity of Voting System
Donald Trump is again questioning the integrity of the nation's voting system.The Republican presidential nominee warned his supporters to keep a close eye on polling places after they vote next month — especially in "certain...
Bloomberg
Nan Fung Trinity CIO on Markets
Helen Zhu, CIO and Managing Director at Nan Fung Trinity, discusses her outlook for markets and investment strategy. She speaks with Yvonne Man and David Ingles on "Bloomberg Markets: China Open".
Curated OER
How Do You Find the Sine of an Angle in a Right Triangle?
A trigonometric ratio is a ratio between two sides of a right triangle. In this problem, find sin(A) in the given right triangle. Use the ratio of the opposite side over the hypotenuse.
Curated OER
How Do You Find a Missing Side of a Right Triangle Using Tangent?
Identify the variables, identify the given values and use a formula to find the missing length in this right triangle problem. What formula? The tangent ratio, which is normally used to show a ratio between two sides of a right triangle,...
Curated OER
How Do You Find the Tangent of an Angle in a Right Triangle?
What's a trigonometric ratio? It is a ratio between two sides of a right triangle. In this problem, find tangent(A) in the given right triangle. Use the ratio of the opposite side divided by the adjacent side to find tan(A). The...
Curated OER
How Do You Find a Missing Side of a Right Triangle Using Sine?
What's a trigonometric ratio? It is a ratio between two sides of a right triangle. In this problem, find sin(A) in the given right triangle. Use the ratio of the opposite side divided by the hypotenuse to find sin(A). The instructor...