Bell ringer We have been discussing triangle congruency this week. What else do you know about triangles?

Slides:



Advertisements
Similar presentations
Concurrent Lines, Medians, and Altitudes
Advertisements

Aim: To review construction for the upcoming regents. Do now: Bisect the following angle: construct the perpendicular bisector of the given line segment:
Warm-up Day before Ch. 4 Test Answer the following questions. Do not write the questions. 1) What does CPCTC stand for? 2) What kind of construction is.
Mrs. Rivasc Perfect Practice Lesson 5-1
4-7 Median, Altitude, and Perpendicular bisectors.
JRLeon Discovering Geometry Chapter 3.8 HGSH Pg. 185 In the previous lesson you discovered that the three angle bisectors are concurrent, the three perpendicular.
Medians, Altitudes, and Angle Bisectors Honors Geometry Mr. Manker.
Aim: Do Now: Ans: 5 5 miles 4 miles Ans: 3 miles P A B C
Thinking Page… Directions: Take out your math encyclopedia and review your notes for this unit. Write two paragraphs using complete sentences and correct.
Top second box. MEDIANS! To the left Point of Concurrency Location It will always be located inside the triangle, because you draw a median from the.
Triangles: Points of Concurrency
Points of Concurrency Where multiple lines, segments rays intersect, have specific properties.
Unit 2 Test Review Geometry WED 1/22/2014. Pre-Assessment Answer the question on your own paper.
Do Now 1/9/12 1.) Draw 2 triangles 2.) In the first one, draw the perpendicular bisectors. 3.) In the second one, draw the angle bisectors.
Lesson 12 – Points of Concurrency II
Bell ringer 1. Which 2 points of concurrency are always inside the triangle? 2. Which point of concurrency is equidistant from the vertices of a triangle?
Objective: Points of concurrency: centroid and orthocenter. Warm up 1.Point of concurrency: circumcenter. Located at the intersection of the perpendicular.
Triangle Inequality Right, Acute, or Obtuse Isosceles Triangles Medians, Altitudes, & Bisectors $100 $200 $300 $400 $500.
Perpendicular Bisectors ADB C CD is a perpendicular bisector of AB Theorem 5-2: Perpendicular Bisector Theorem: If a point is on a perpendicular bisector.
Constructions Remember, you can always look in your notebook and your textbook (index) for “how to” instructions!
Unit 5 Review. 1.)Name the angles from smallest to largest if AB=7, BC=10 and AC=14.
Geometry B POINTS OF CONCURRENCY. The intersection of the perpendicular bisectors. CIRCUMCENTER.
Points of Concurrency The point where three or more lines intersect.
Special Segments of Triangles Advanced Geometry Triangle Congruence Lesson 4.
5.1 Special Segments in Triangles Learn about Perpendicular Bisector Learn about Medians Learn about Altitude Learn about Angle Bisector.
BELL RINGER  We have been discussing triangle congruency this week. What else do you know about triangles?
Chapter 5.2 & 5.3 BISECTORS, MEDIANS AND ALTITUDES.
5.3 Concurrent Lines, Medians, and Altitudes Stand 0_ Can you figure out the puzzle below??? No one understands!
Median, Angle bisector, Perpendicular bisector or Altitude Answer the following questions about the 4 parts of a triangle. The possible answers are listed.
 Warm Up –Graded Centroid Construction (10 minutes)  Homework Check (10 minutes)  Centroid Practice (25 minutes)  What is an altitude? (10 minutes)
5-2 Median & Altitudes of Triangles
EXAMPLE 3 Find the orthocenter Find the orthocenter P in an acute, a right, and an obtuse triangle. SOLUTION Acute triangle P is inside triangle. Right.
1 Def: Median Def: A median of a triangle is a line segment that joins any vertex of the triangle to the midpoint of the opposite side. Every triangle.
Lesson 3.7 & 3.8: 1.Homework Collection 2.Constructions.
Points of Concurrency Objective: Students will understand terms of concurrency, how to construct them and what they do.
bell ringer 1. What is an angle bisector? How many are in a triangle?
4.4 Altitudes, Medians, and Perpendicular Bisectors
5.4: Use Medians and Altitudes
Section 5 – 3 Concurrent Lines, Medians, and Altitudes
Unit 5 Review.
Chapter 5 Lesson 3 Objective: To identify properties of medians and altitudes of a triangle.
Bell Ringer 10/21/
Triangle Centers Points of Concurrency
12 Chapter Congruence, and Similarity with Constructions
Bell work: Turn in when completed
Transformations Transformation is an operation that maps the original geometric figure, the pre-image , onto a new figure called the image. A transformation.
Date: Topic: Altitudes, Medians, and Bisectors ____ (6.4)
Bell Ringer Mrs. Rivas Nancy wrote a proof about the figure shown below. In the proof below, Nancy started with the fact that
3. Construct an altitude, bisector, or median of the triangle below.
Vocabulary and Examples
Concurrent Lines, Medians, Altitudes
Chapter 5 Types of Segments
Congruency.
Lesson 5-3: Bisectors in Triangles
5-4 Medians and Altitudes
bell ringer 1. What is an angle bisector? How many are in a triangle?
5.3 Concurrent Lines, Medians, and Altitudes
Basic Constructions Constructing a congruent segment
Bell Work Complete problems 8, 9, and 15 from yesterday. Proofs are on the board.
Unit 2 – Similarity, Congruence, and Proofs
4-1 Congruent Figures 4-2 Triangle Congruence by SSS and SAS
DO NOW Complete the 4 problems at the top of your worksheet.
Warm-Up 11/18/08 1.Point of concurrency for the perpendicular bisectors of a triangle. a. incenter b. median c. circumcenter d.centroid 2.Point.
Chapter Three Triangles.
Properties of Triangles
12 Chapter Congruence, and Similarity with Constructions
Bell Ringer Answer Choices: Vertical, Supplementary, Complementary,
Bell Ringer Answer Choices: Vertical, Supplementary, Complementary,
4-1 Congruent Figures 4-2 Triangle Congruence by SSS and SAS
concurrency that we will be discussing today.
Presentation transcript:

Bell ringer We have been discussing triangle congruency this week. What else do you know about triangles?

Real World Usage of Points of Concurrency Wednesday April 16, 2014

The problem: A developer plans to build an amusement park but wants to locate it within easy access of the three largest towns in the area as shown on the map below. The developer has to decide on the best location and is working with the ABC Construction Company to minimize costs wherever possible. No matter where the amusement park is located, roads will have to be built for access directly to the towns or to the existing highways.

(2) Let’s figure this out.. Investigate the problem by constructing the following: a) all 3 medians of the triangle b) all 3 altitudes of the triangle c) all 3 angle bisectors of the triangle d) all 3 perpendicular bisectors of the triangle

(4) Compare… how close is your answer in #1 to your answer in #2 (4) Compare… how close is your answer in #1 to your answer in #2? (5) Give a reasonable guess as to what we name the points you discovered in #2 (6) what is the name of the point of concurrency that you will recommend for the location of the park?

(7) the president of the company building the park is concerned about the cost of building roads from the towns to the park. What recommendation would you give him? write a memo to the president explaining your recommendation.