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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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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
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
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.
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
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
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°.
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°
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
9-8 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
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°