Welcome to Clip from Spiral logo

Interactive video lesson plan for: Math Definitions-Angle Definitions

Activity overview:

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!

Join Our Geometry Teacher Community Today!

In this video I define,
angle of depression,angle of elevation,angle bisector, and right angle

Angles of Depression are angles below the horizontal, imagine looking from ground level into a deep canyon.
The angle that an observer would lower his or her line of sight below a horizontal line in order to see an object is the angle of depression.
The angle of depression involves 4 items.
Observers eyes,the horizontal ,line of sight, and the object.

Angles of Elevation
Angles of elevation are angles above the horizontal, imagine looking up from ground level toward the top of a mountain.
The angle that an observer would raise his or her line of sight above a horizontal line in order to see an object is the angle of elevation
Angle of elevation involves 4 things, the object, the horizontal, line of sight, and the observers eyes.
Angle Bisector
An angle bisector is a line or ray that divides an angle in half
The bisector divides the larger angle into two smaller equal angles
The angle bisector of a polygon will intersect an interior angle

A right angle is an angle that measures exactly 90 degrees
Examples of right angles include the corners of squares, the angle in a right triangle, and perpendicular lines create right angles.

At MooMooMath we provide helpful Math and Geometry videos to help you figure out how to solve Math problems or review old Math concepts you may need to refresh. If you’re a Math student or teacher, we'd love to have you subscribe and join us!

* Subscribe

Let’s connect
* Google+
* Pinterest

Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"

Tagged under: definitions,math definitions,angle,angle depression,angle elevation,angle bisector, angle

Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.

Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip

Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans

Play this activity

1. Students enter a simple code

2. You play the video

3. The students comment

4. You review and reflect

* Whiteboard required for teacher-paced activities

Share on:

Share Math Definitions-Angle Definitions on Google+ Share Math Definitions-Angle Definitions on Twitter Share Math Definitions-Angle Definitions on Facebook Pin Math Definitions-Angle Definitions Email Math Definitions-Angle Definitions

Ready to see what else Spiral logo can do?

With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.


Carry out a quickfire formative assessment to see what the whole class is thinking


Create interactive presentations to spark creativity in class

Team Up

Student teams can create and share collaborative presentations from linked devices


Turn any public video into a live chat with questions and quizzes

1000s of teachers use Spiral to deliver awesome, engaging activities that capture students' understanding during lessons.

Now it's your turn Sign up

Spiral Reviews by Teachers and Digital Learning Coaches

Review of Spiral by teacher: Kathryn Laster @kklaster

Tried out the canvas response option on @SpiralEducation & it's so awesome! Add text or drawings AND annotate an image! #R10tech

Review of Spiral by teacher: Room 220 Math Stars @3rdgradeBCE

Using @SpiralEducation in class for math review. Student approved! Thumbs up! Thanks.

Review of Spiral by teacher: Miss Ord @ordmiss

Absolutely amazing collaboration from year 10 today. 100% engagement and constant smiles from all #lovetsla #spiral

Review of Spiral by teacher: Adam J. Stryker @strykerstennis

Students show better Interpersonal Writing skills than Speaking via @SpiralEducation Great #data #langchat folks!

Review of Spiral by teacher: Dr Ayla Göl @iladylayla

A good tool for supporting active #learning.

Review of Spiral by teacher: Brett Erenberg @BrettErenberg

The Team Up app is unlike anything I have ever seen. You left NOTHING out! So impressed!

Get the Clip Chrome Extension & Create Video Lessons in Seconds

Add Clip to Chrome