Acute Angle

Abstract: An interactive applet and associated web page that demonstrate acute angles (those less than 90 deg). The applet presents an angle (initially acute) that the user can adjust by dragging the end points of the line segments forming the angle. As it changes it shows the angle measure and a message that indicate which type of angle it is. There a software 'detents' that make it easy capture exact angles such as 90 degrees and 180 degrees The message and angle measures can be turned off to facilitate classroom discussion. The text on the page has links to other pages defining each angle type in depth. Applet can be enlarged to full screen size for use with a classroom projector. After use in the classroom, student can access it again from any web browser at home or in the library with no login required. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Conditions of Use: Custom License
Content is free to view and to use for education purposes and to print and distribute printed copies for non-commercial uses without modification. Print any page and distribute printed copies on a non-commercial basis. User may charge to cover the costs of printing and distribution. Create courses or other documents that have links to any page in the site, even if that makes it look like the pages are part of the course, so long as the page contents are not modified.