Directions: You need 15 toothpicks. ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources.

Slides:

Advertisements

Similar presentations

Triangles TOPIC 9 LESSON 9-5.

Advertisements

Report by Jennifer Johnson

Draw the following: 1. acute triangle 2.right triangle 3.obtuse triangle 4. acute, scalene triangle 5.obtuse, isosceles triangle 6. right, scalene.

7/3/2015 Geometry 1 Classifying Triangles Free powerpoints at

Mathematics Types of Triangles By: Jenny Ordonez.

EXAMPLE 1 Classifying a Triangle a.Classify XYZ by its angles. b. Classify XYZ by its side lengths. SOLUTION a. The triangle has a right angle at Y. So,

Classifying Triangles Students will classify triangles using the lengths of the sides and the angles. S. Calahan October 2010.

Classify Triangles Standard 4C.

Review: Classifying Triangles and The Triangle Angle Sum Theorem

Classify Triangles Classify triangles by the lengths of their sides and their angles.

Classifying Triangles Add the following to your math notes.

EQUILATERAL & ISOSCELES Quiz tomorrow. CLASSIFY the triangle by ANGLES and SIDES Angles: acute, obtuse, right Sides:equilateral, isosceles, scalene 91.

Triangle A polygon with three sides and three angles. A triangle can be names by its’ side lengths and angles. – Side lengths: isosceles, equilateral,

Triangle Classification. Objectives Classify triangles by their angle and side measures Find the sum of the measure of the interior and exterior angles.

TRIANGLES AND TYPES OF TRIANGLES. A triangle has three sides.

Types of Triangles. Equilateral Triangle All sides are the same length and all the angles are the same length.

What is a triangle A plane figure, created by connecting three points that are not in the same line. Three – side polygon whose angles add up to 180°

Types of Triangles. Angles The angles in a triangle add up to o + 60 o + 60 o =

Classifying Triangles Unit 4C-Triangle Geometry LT1: I can classify triangles based on angle measures. LT2: I can classify triangles based on side measures.

Classifying Triangles Math 7 Ms. Conway Math 7 Ms. Conway.

Equilateral, Isosceles, Scalene, Right, Acute, Obtuse Types of Triangles.

Time for Triangles. What is a triangle? A triangle is a polygon. It has 3 sides and 3 angles. It can also be called a trigon.

Warm Up # 4 Classify and name each angle. 1 ab c d.

Classifying Triangles How many degrees can be found in all triangles? 180 We can classify triangles 2 ways: By their angles By their sides.

Sum of Angles in Triangles. Triangles classified by sides A scalene triangle has no congruent sides. An isosceles triangle has at least 2 congruent sides.

By: Joanne Hodgson and Jennifer Campbell Today we will be learning how to classify triangles according to length of sides and measurement of the angles.

Classifying Triangles. Two Ways to Classify Triangles  By Their Sides  By Their Angles.

Scalene triangle: A scalene triangle is a triangle that has no equal sides. The following is a scalene triangle.

Sum of Angles in Triangles. Triangles classified by sides A scalene triangle has no congruent sides. An isosceles triangle has at least 2 congruent sides.

Lesson 8.3 Concept: How to classify triangles by their sides and angles. An equilateral triangle has three sides of the same length. An isosceles triangle.

Learning Objective Identify triangles using their sides.

Classify These Triangles by Sides and Angles. Chapter 4 Congruent Triangles Section 4.1: Triangle Sum Properties Todays Objective: Determine if a right.

4.1 Triangle Angle Sum and Properties. How many degrees in a triangle? The sum of the angles in any triangle is exactly 180 degrees.

Mathematics Types of Triangles.

Angles In Triangles Types of Triangles Isosceles triangle

Classifying Triangles

MCC.4.G.1-2 All About Triangles.

TRI NGLES 2 ways to classify: By Sides By Angles 60 4” 4” 4” 60 60

Classifying Triangles

Angles In Triangles Types of Triangles Isosceles triangle

Triangles A polygon with 3 sides.

Classifying Triangles

Classifying Triangles

Triangles Created by G. Antidormi 2005.

Angles In Triangles Types of Triangles Isosceles triangle

Types of Triangles.

Classifying Triangles

Classifying Triangles

Objective - To classify triangles.

Triangles Guided Notes

Add up all the sides Perimeter of Area of a Rectangle: ANY polygon:

Directions: Cut out each of the triangles below

Identify type of triangle

Types of Triangles Thursday, 11 April 2019.

Types of Triangles Thursday, 11 April 2019.

4-1 Vocabulary Acute triangle Equiangular triangle Right triangle

Intro to Triangles.

Classifying Triangles

Equilateral – equal All sides are equal length.

Classifying Triangles

Determining if a Triangle is Possible

Area and Perimeter Triangles.

Presentation transcript:

Directions: You need 15 toothpicks. ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

With 12 toothpicks, 1.Is it possible to make an equilateral triangle using all 12 toothpicks? ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

With 12 toothpicks, 1.Is it possible to make an equilateral triangle using all 12 toothpicks? YES ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

2.What are the lengths of each side? ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

2.What are the lengths of each side? 4, 4, 4 ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

3.Is it possible to make an isosceles triangle that is NOT equilateral? ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

3.Is it possible to make an isosceles triangle that is NOT equilateral? YES ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

4.What are the lengths of each side? ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

4.What are the lengths of each side? 2, 5, 5 ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

4.Make a scalene triangle using all 12 toothpicks. What are the lengths of each side? ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

4.Make a scalene triangle using all 12 toothpicks. What are the lengths of each side? 3, 4, 5 ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

5.Is it possible to form a triangle with each of the following number of toothpicks as sides? If not possible, explain why? ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

a)2, 4, 6 b)3, 6, 3 c)1, 5, 6 d)2, 3, 7 ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

a)2, 4, 6 b)3, 6, 3 c)1, 5, 6 d)2, 3, 7 NO ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

6.Do you think it would ever be possible to make a triangle when the length of two shorter sides together total less than the longest side alone? If yes, give an example. If no, explain why. ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

6.No. The sum of shorter sides will never be as long as the longest side. ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

7.Do you think it would ever be possible to make a triangle when the length of two shorter sides together equal the longest side alone? If yes, give an example. If no, explain why. ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

7.No. The shorter sides will not fit the longer side. ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

With 15 toothpicks, 8.Make 4 different triangles using all of the toothpicks. Classify each triangle. ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

a)5, 5, 5 b)7, 5, 3 c)4, 5, 6 d)3, 6, 6 equilateral scalene isosceles ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

9.List 4 sets of lengths that total 15 but will not form a triangle. ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

a)1, 2, 12 b)2, 3, 10 c)3, 4, 8 d)3, 3, 9 ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources

Conclusion The sum of the measures of any 2 sides of a triangle must be __________ the measure of the 3 rd side. ©2009, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, GeorgiaAdapted from various sources