The US Defense Department has ordered special augmented reality contact lenses with a view to using them on the battlefield, according to reports. DARPA placed an order with Innovega for its lenses, which work with special glasses to...

"If there's one thing governments can do, it's waste your money. From the US air dropping in cashmere goats to Dubai's jetpacking firemen, here are 10 Ridiculous Times Government Wasted Your Money.

SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow...

In this video, the teacher explains how to draw a Pentagon by connecting five straight sides. The lesson covers the importance of straight lines, closed shapes, and vertices. The teacher dispels common misconceptions about the appearance...

👉 Learn about the interior and the exterior angles of a polygon. A polygon is a plane shape bounded by a finite chain of straight lines. The interior angle of a polygon is the angle between two sides of the polygon. The sum of the...

SchoolOnline's Primary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 9-13, they cover every key topic and sub topic covered in Maths in clear and easy to follow steps.



This video...

This video is answering the question of what is a pentagon.

Washington is starting to open up about footage of UFOs taken by U.S. military personnel over the last few years.

In 2016, the Defense Department gave hackers a challenge: find our vulnerabilities, and we'll pay you. Hear from two people behind the bug bounty program on deterring cyber threats and building the next front of digital defense.

👉 Learn about the interior and the exterior angles of a polygon. A polygon is a plane shape bounded by a finite chain of straight lines. The interior angle of a polygon is the angle between two sides of the polygon. The sum of the...

A Shapes Song and Colors Song! This Shapes kids song is for learning colors with shapes for children. Sing and repeat the names of the shapes and colors in this fun children's song. Great for babies, toddlers, preschool, kindergarten,...

Regular and Irregular Polygons.

In this lesson, students will learn how to draw polygons by using given coordinates as vertices. They will understand how the X and Y axes on a coordinate plane determine the movement along each axis.

Classifying polygons based on the presence or absence of perpendicular lines.

Secretary of Defense Robert McNamara creates the Vietnam Study Task Force at the Pentagon to create a study of the Vietnam War, which, by the way, was raging on the time with no end in sight. This study was to remain classified but...

SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow...

In this video, the teacher explains the terms used to describe three-dimensional figures. They discuss the difference between one-dimensional, two-dimensional, and three-dimensional figures, and provide examples of each. The teacher also...

Here is the fun and easy way to learn to read with Rock 'N Learn Mathematics. Enjoy learning with fun, catchy, engaging mathematics songs.

Ships of the Iranian Navy have rounded the southern tip of Africa for the first time ever, and they seem to be heading for Venezuela. <br/>

SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow...

In this video we are going to look at the angles in polygons… the sum of all interior angles and the size of one interior angle. In another video we will look at exterior angles.



Before we start, you should...

It defines a quadrilateral and its types. It explains the properties of each type of quadrilateral and other polygons such as pentagon, hexagon and so on.

CREDITS

Animation & Design: Peter van de H
euvel
Narration: Luc
y Billings
Script

: Lucy Billings

The word polygon comes from Greek. Poly means “many” and Gon means “angles”. Polygon = many angles. Polygons are...

September 11, 2001 is a day etched into the memories of millions. Art around the world is being used to explore and understand.