Triangle Classification

Today we learned about classifying triangles.
Today's TEKS were: G.3.B The student is expected to construct and justify statements about
geometric figures and their properties.
Today's objective was: The student will be able to classify triangles based on measurement of angles or sides.

Review of today's lesson:  There are two ways to classify triangles.  You can group triangles by their angle measurement or by their side measurement.

When grouping triangles by angles, they can be acute, right, obtuse, or equiangualar.  An acute triangle is a triangle where all of the angles are acute or less than 90 degrees.  A right triangle is a triangle that contains one right angle which is an angle equal to 90 degrees.  A obtuse triangle contains one obtuse angle or an angle that measures more than 90 degrees.  We learned in class today that the that the root equi means equal so,  an equiangualar triangle is one where all angles are the same.

When grouping triangles by side length, they can be scalene, isosceles, and equilateral.  A scalene traingle triangle where all of the sides are a different size.  An isosceles triangle has two side that are the same size.  Finally a equilateral triangle is one where all the sides are equal.

You can use a word from both category to describe a triangle.  For example, a right scalene triangle is a triangle with a right angle and three different sizes.

Look at this helpful graphic I found.
 

Unit 1: Triangles

Hello class!  Here is a list of topics for our first unit.  We will be covering triangles in this unit.  I also included the name of the scribe for each day.

1.  Classifying triangles by their angles and sides (Allie)

      2.  Angle sum theorem (Emily K)

      3.  Congruence formulas: SAS, etc  (Emily Y)

      4.  Congruence vs similarity (Rachel)

      5.  Area/perimeter of triangles (Allie)

      6.  Pythagorean theorem (Emily K)

      7.  Special right triangles (Emily Y)

      8.  Real world applications (Rachel)

Also, here's a math joke for today!
What do you call an empty parrot cage?
......
Polygon!!

See you all in class,

--Mr. Escalante

Welcome to Our Blog

Welcome to the blog for Mr. Escalante’s Geometry class!  This year we will be using this blog to extend our learning in geometry.  Each day I will assign one of you to be a “scribe.”  It will be this student’s job to recap or summarize what we went over that day and put it on the blog.  This is a resource for you, and participation will count as 5% of your final grade.  I encourage you to comment on each other’s posts and ask questions.  This blog is meant to be an ever-changing document.

Each post should have:

The name of the lesson

Objective (can be found on the board)

TEKS (can be found on the board)

A summary of the lesson.

Your thoughts on the lesson

Anything that confused you

In addition, at the end of each blog post, the scribe needs to create an example problem from the lesson  OR
Insert a graphic that either they created or found on the internet.

If you want to read more about the ways other teachers are using blogs, here is a good link:
http://theedublogger.com/2012/07/26/the-state-of-educational-blogging-in-2012/



--Mr. Escalante