### Present Remotely

Send the link below via email or IM

• Invited audience members will follow you as you navigate and present
• People invited to a presentation do not need a Prezi account
• This link expires 10 minutes after you close the presentation

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

# 5 Types of Triangles & Parts of Triangles

No description
by

## Maryann Lyons

on 16 May 2014

Report abuse

#### Transcript of 5 Types of Triangles & Parts of Triangles

5 Types of Triangles & Parts of Triangles
Acute Triangle & Obtuse Triangle
A acute triangle is where all angles measure less than a right angle or 90 degrees.

An obtuse triangle is a triangle that has an angle more than 90 degrees.

Isosceles Triangle & Equilateral Triangle
Right Triangle & Scalene Triangles
Median of a Triangle
Median of a Triangle is a line segment joining a vertex of the triangle to the midpoint of the opposite side of the triangle. The three medians of a triangle are concurrent and the concurrent point is called the centroid of the triangle.
("Median of a Triangle," n.d.)
A isosceles triangle is any triangle that has two sides that are the same length.

A equilateral triangle is a triangle where all three sides are the same length.
Altitude of a Triangle
Formally, the shortest line segment between a vertex of a triangle and the (possibly extended) opposite side. Altitude also refers to the length of this segment.
Bisector of a Triangle
Activity
Exit Ticket
References
The definition of the perpendicular bisector of a side of a triangle is a line segment that is both perpendicular to a side of a triangle and passes through its midpoint.
Identify the median of the triangle.
Choices:
B. AC
C. CB
D. BD

Draw an example of altitude, median, and bisector of a triangle.
(Gibilisco, 2003)
("The Altitudes of a Triangle," 2011)
("Constructing the Angle Bisectors of a Triangle," 2011)
("Types of Triangles," n.d.)
By: Maryann Lyons
The Altitudes of a Triangle. (2011, May 02). Retrieved May 12, 2014, from
Bruce Simmons. (n.d.). Mathwords: Altitude. Retrieved May 09, 2014, from http://www.mathwords.com/a/altitude.htm
Constructing the Angle Bisectors of a Triangle. (2011, May 02). Retrieved May 5, 2014, from
Copyright Math Open Reference. (n.d.). Isosceles triangle - math word definition - Math Open Reference. Retrieved May 08, 2014, from http://www.mathopenref.com/isosceles.html
Finding The Altitude Of A Triangle. (n.d.). Retrieved May 08, 2014, from http://needmathhelp.jimdo.com/geometry/finding-the-altitude-of-a-triangle
Gibilisco, S. (2003). Geometry demystified. New York: McGraw-Hill.
MathsIsFun.com. (n.d.). Obtuse Triangle. Retrieved May 07, 2014, from http://www.mathsisfun.com/definitions/obtuse-triangle.html
Median of a Triangle - MathHelp.com - Geometry Help. (2007, October 31). Retrieved May 5, 2014, from