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9-1 Introduction to Geometry 9-2 Measuring and Classifying Angles 9-3 Angle Relationships

Warm Ups. Preview. 9-1 Introduction to Geometry 9-2 Measuring and Classifying Angles 9-3 Angle Relationships 9-4 Finding Angle Measures 9-5 Classifying Polygons 9-6 Classifying Triangles 9-7 Angle Measures in Triangles 9-8 Classifying Quadrilaterals 9-9 Congruent Figures.

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9-1 Introduction to Geometry 9-2 Measuring and Classifying Angles 9-3 Angle Relationships

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  1. Warm Ups Preview 9-1 Introduction to Geometry 9-2 Measuring and Classifying Angles 9-3 Angle Relationships 9-4 Finding Angle Measures 9-5 Classifying Polygons 9-6 Classifying Triangles 9-7 Angle Measures in Triangles 9-8 Classifying Quadrilaterals 9-9 Congruent Figures

  2. 9-1 Introduction to Geometry Warm Up What geometry term might you associate with each object? 1.one edge of a cardboard box 2. the floor 3. the tip of a pen line segment or line plane or rectangle point

  3. C AB, BA, and AC A B 9-2 Measuring and Classifying Angles Warm Up 1.Draw two points. Label one point A and the other point B. 2. Draw a line through points A and B. 3. Draw a ray with A as an endpoint and C as a point on the ray. 4. Name all the rays in your drawing.

  4. 9-3 Angle Relationships Warm Up Classify each angle with the given measure as acute, right, obtuse, or straight. 1.125° 2. 90° 3. 85° 4. 180° right obtuse acute straight

  5. 9-4 Finding Angle Measures Warm Up Tell whether the given angles are vertical, complementary, or supplementary. 1.QXT and QXR 2. QXR and TXS 3. PXQ and QXR 4. PXQ and PXS 5.TXS and SXR supplementary vertical complementary supplementary supplementary

  6. 9-5 Classifying Polygons Warm Up 1. How do you name a ray? Under the ray symbol, name first the endpoint and then any other point on the ray. 2. What is the measure of an obtuse angle? between 90° and 180° 3. How do you name a line? Under the line symbol, name any two points on a line. 4. What is true of supplementary angles? The sum of their measures is 180°.

  7. 9-6 Classifying Triangles Warm Up 1.What is the name of a six-sided polygon? 2. What is the definition of an acute angle? 3. The measure of one of two supplementary angles is 32°. What is the measure of the other angle? hexagon an angle that measures less than 90° 148°

  8. 9-7 Angle Measures in Triangles Warm Up Solve. 1.72 + 18 + x = 180 2. 80 + 70 + x = 180 3.x + 42 + 90 = 180 4. 120 + x + 32 = 180 5. 180 = 63 + x + 14 x = 90 x = 30 x = 48 x = 28 x = 103

  9. 9-8 Classifying Quadrilaterals Warm Up Identify the triangle based on the given measurements. 1.3 ft, 4 ft, 6 ft 2. 46°, 90°, 44° 3. 7 in., 7 in., 10 in. scalene right isosceles

  10. 9-9 Congruent Figures Warm Up Find the measure of the third angle in the triangle, given two angle measures. 1.58°, 104° 2. 32°, 63° 3. 90°, 38° 4. 42°, 88° 18° 85° 52° 50°

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