Geometry Theme MAA PREP WORKSHOP Laurie Burton and Maria Fung Western Oregon University July 8 th 2003 Overview Overview of WOU Geometry Courses Foundations Geometry for Elementary Teachers Geometry for Middle School Teachers Geometry Activities

ByIDENTIFYING TRIANGLES. They are everywhere . IDENTIFY TRIANGLES. By sides By angles. Isosceles Triangle. At least two sides are congruent. Equilateral Triangle. All sides are congruent. Scalene Triangle. No sides are congruent. Equiangular Triangle. All angles are congruent.

By5.6 Indirect Proof & Inequalities in Two Triangles. Geometry Mrs. Spitz Fall 2004. Objectives:. Read and write an indirect proof Use the Hinge Theorem and its Converse to compare side lengths and angle measures. Assignment. pp. 305-306 #1-24 all. Using Indirect Proof.

ByChapter 8 Test Review. Honors Geometry. Solve for x. Leave in simplest radical form. x. 4. 2. Solve for x. Leave in simplest radical form. 7. x. 3. Solve for x. Leave in simplest radical form. x. o. 30. 6. Find the perimeter. x. 9. 15. Find the Perimeter of the SQUARE.

ByThe Pythagorean Theorem. Lesson 7-2. The Pythagorean Theorem. Given any right triangle, A 2 + B 2 = C 2. C. A. B. Example. In the following figure if A = 3 and B = 4, Find C. A 2 + B 2 = C 2 3 2 + 4 2 = C 2 9 + 16 = C 2 5 = C. C. A. B.

ByNotes on Triangles. B. Vertices are labeled with capital letters. The side opposite the vertex is labeled with a corresponding lowercase letter. c. A. a. b. C. Facts From Geometry: Triangle angle sum. B. What happens if you place the angles of a triangle side by side …. A. C.

By5.4 Use Medians and Altitudes. Median : segment whose endpoints are the vertex of the triangle and the midpoint of the opposite side. Median of a triangle. Centroid. Median : segment whose endpoints are the vertex of the triangle and the midpoint of the opposite side.

ByClassifying Triangles. Have out your notebook . Review. Ray Segment Line Point. Review. How many points do you need to draw a line?. Review. Do you know how to write lines, segments, rays, and points using letters and symbols above them?. Review.

ByLesson 4-1. Classifying Triangles. Transparency 4-1. 5-Minute Check on Chapter 3. Refer to the figure. 1. What is the special name given to the pair of angles shown by 2 and 6? 2. Find m 3. 3. Find m 4 . 4. Find the slope of the line that contains the points at (4, 4) and

ByPoints of Concurrency. By: Isaac Fernando and Kevin Chung. Aim: Points of Concurrency. Do Now: what is a point of concurrency?. Centroid. Formed by the medians of a triangle

ByJim Rahn www.jamesrahn.com James.rahn@verizon.net. Triangle Classification. Based upon NCTM Triangle Classification. Line segment AB is placed on the plane. . Task 1: Show all point C, on the plane, where triangle ABC is a right triangle. . B. A. Solution 1. Solution 2.

ByTriangles. SPI 6.4.2 I CAN identify and find missing angles measures in triangles. A triangle is a closed figure with three line segments and three angles. . Equilateral Triangle. ALL three sides and angles equal in measure. In the figure below , the slash marks indicate equal measure.

ByChapter 8: Right Triangles and Trigonometry. Section 8-1: The Pythagorean Theorem and its Converse . Objectives:. To use the Pythagorean Theorem. To use the converse of the Pythagorean Theorem. Vocabulary. Pythagorean Triple. Pythagoras. Greek mathematician from the 6 th century BC.

BySegments in triangles. Triangle Geometry. Special Segments of a triangle: Median. Definition:. A segment from the vertex of the triangle to the midpoint of the opposite side. . Since there are three vertices in every triangle, there are always three medians . B. C. F. D. E. A.

ByTriangle Angles. What is an angel?…I mean ANGLE!. Two rays with a common endpoint form an angle. Supplementary & Complimentary Angles. Two angles are supplementary if they add up to 180° - forming a straight line Two angles are complimentary if they add up to 90°.

ByClassifying Triangles. Students will classify triangles using the lengths of the sides and the angles. S. Calahan October 2010. Classifying triangles by angles. Acute triangle – all of the angles are acute. Classifying triangles by angles. Obtuse triangle – one angles is obtuse.

By7.2 Converse of Pythagorean Theorem. REMEMBER:. The hypotenuse of a triangle is the longest side. Theorems:. Theorem 7.2: Converse of the Pythagorean Theorem:

ByClassifying Triangles . 3 rd Grade Mathematics Alexis Carroll . Click Here to begin the lesson!. Click on the following triangles for more information. . Triangle Equilateral Isosceles Scalene Acute Right Obtuse. Click here for the review question . Triangle .

ByTriangle. A polygon with three sides and three angles. A triangle can be names by its’ side lengths and angles. Side lengths: isosceles, equilateral, or scalene Angles: acute, obtuse, or right. Isosceles Triangle. An isosceles triangle has two sides of equal length. Equilateral Triangle.

ByWarm- up Type 2 writing and Construction. Write your own definition and draw a picture of the following: Angle Bisector Perpendicular Bisector Draw an acute triangle. Make the sides at least three inches in length. Construct the perpendicular bisector of one of the sides of the triangle.

ByView Obtuse triangle PowerPoint (PPT) presentations online in SlideServe. SlideServe has a very huge collection of Obtuse triangle PowerPoint presentations. You can view or download Obtuse triangle presentations for your school assignment or business presentation. Browse for the presentations on every topic that you want.