'Angles theorem' presentation slideshows

Lesson 4.1 Classifying Triangles

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7-1

7-1. Ratio and Proportion. Warm Up. Lesson Presentation. Lesson Quiz. Holt Geometry. Objectives. Write and simplify ratios. Use proportions to solve problems. Remember!. In a ratio, the denominator of the fraction cannot be zero because division by zero is undefined.

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Concepts, Theorems and Postulates that can be use to prove that triangles are congruent .

Concepts, Theorems and Postulates that can be use to prove that triangles are congruent. Learning Target. I can identify and use reflexive, symmetric and transitive property in proving two triangles are congruent. I can use theorems about line and angles in my proof.

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Daniela Morales Leonhardt 9-5

JOURNAL CHAPTER 6. Daniela Morales Leonhardt 9-5. Describe what a polygon is. Include a discussion about the parts of a polygon. Also compare and contrast a convex with a concave polygon. Compare and contrast equilateral and equiangular. Give 3 examples of each. TOPIC 1: Polygons.

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Warm Up

Warm Up. Lesson Presentation. Lesson Quiz. AC. Warm Up 1. What are sides AC and BC called? Side AB ? 2. Which side is in between ? A and ? C ? 3. Given ? DEF and ? GHI , if ? D ? ? G and ? E ? ? H , why is ? F ? ? I ?. legs; hypotenuse. Third ?s Thm. Objectives.

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6-3

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Warm Up Justify each statement. 1. 2. Evaluate each expression for x = 12 and y = 8.5.

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DRILL

DRILL. Given: N is the midpoint of LW N is the midpoint of SK Prove:. Statements Reasons. N is the midpoint of LW N is the midpoint of SK. Given. Definition of Midpoint. Vertical Angles are congruent. SAS Postulate.

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6-3

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10.6 Secants, Tangents, & Angle Measures

10.6 Secants, Tangents, & Angle Measures. Objectives. Find measures of angles formed by lines intersecting on, inside, or outside a circle. A. D. O. C. B. Secants and Interior Angles.

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4.3 Congruent Triangles

4.3 Congruent Triangles. CCSS. Content Standards G.CO.7 Use the definition of congruence in terms of rigid motions to show that two triangles are congruent if and only if corresponding pairs of sides and corresponding pairs of angles are congruent.

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6-5 Rhombi and Squares

6-5 Rhombi and Squares. You determined whether quadrilaterals were parallelograms and/or rectangles. Recognize and apply the properties of rhombi and squares. Determine whether quadrilaterals are rectangles, rhombi, or squares. Properties of a rhombus.

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4.2 Apply Congruence and Triangles

4.2 Apply Congruence and Triangles. You will identify congruent figures. Essential Question: What are congruent figures?. Tell students they will learn how to answer this question by studying the definition of congruent figures.

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Triangle & Geometric Congruence

Triangle & Geometric Congruence. Mr. Robinson Geometry Fall 2011. Essential Question:. How do you identify corresponding parts of congruent triangles?. The order of the ________ indicates the corresponding parts!. ? ABC ? ? XYZ. Corresponding Parts.

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7-5 Parts of Similar Triangles

7-5 Parts of Similar Triangles. You learned that corresponding sides of similar polygons are proportional. . Recognize and use proportional relationships of corresponding angle bisectors, altitudes, and medians of similar triangles. Use the Triangle Bisector Theorem.

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GEOMETRY: Chapter 4

GEOMETRY: Chapter 4. 4.2: Congruence and Triangles. In two congruent figures, all the parts of one figure are congruent to the corresponding parts of the other figure. In congruent polygons, this means that the corresponding angles and the corresponding sides are congruent.

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Prove that a given quadrilateral is a parallelogram.

Objective. Prove that a given quadrilateral is a parallelogram. You can use the given information about a figure to decide which condition is best to apply. The two theorems below can also be used to show that a given quadrilateral is a parallelogram.

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You will be able to apply ASA, AAS, and HL to construct triangles and to solve problems.

Objectives. You will be able to apply ASA, AAS, and HL to construct triangles and to solve problems. You will be able to prove triangles congruent by using ASA, AAS, and HL.

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4.1 Congruent Figures

4.1 Congruent Figures. Congruent figures have the same size and shape. When two figures are congruent, you can slide, flip, or turn one so that it fits exactly on the other one. Congruent Figures.

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Apply Congruence and Triangles

Apply Congruence and Triangles. Tina Collins Roscommon High School Roscommon, Michigan. Basic Information.

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