CK-12 Geometry-Concepts

http://www.ck12.org Chapter 1. Basics of Geometry Example C Name one linear pair in the diagram below. One example is^6 INMand^6 ...

1.9. Linear Pairs http://www.ck12.org Ifm^6 INJ= 63 ◦, findm^6 MNI. Answers: 180◦ 90◦ 180◦− 63 ◦= 117 ◦ Interactive Practice ...

http://www.ck12.org Chapter 1. Basics of Geometry 14. 15. 16. ...

1.10. Vertical Angles http://www.ck12.org 1.10 Vertical Angles Here you’ll learn about vertical angles and how they can help you ...

http://www.ck12.org Chapter 1. Basics of Geometry Investigation: Vertical Angle Relationships Draw two intersecting lines on yo ...

1.10. Vertical Angles http://www.ck12.org One example is^6 INJand^6 MNL. Example C If^6 ABCand^6 DBFare vertical angles andm^6 A ...

http://www.ck12.org Chapter 1. Basics of Geometry 3. Answers: Vertical angles are congruent, so set the angles equal to each ot ...

1.10. Vertical Angles http://www.ck12.org Name one pair of vertical angles. Ifm^6 INJ= 53 ◦, findm^6 MNL. For exercises 3-5, d ...

http://www.ck12.org Chapter 1. Basics of Geometry 10. If^6 ABCand^6 DBFare vertical angles andm^6 ABC= ( 4 x+ 1 )◦andm^6 DBF= ( ...

1.11. Triangle Classification http://www.ck12.org 1.11 Triangle Classification Here you’ll learn how to classify a triangle base ...

http://www.ck12.org Chapter 1. Basics of Geometry Obtuse Triangle:When a triangle has one obtuse angle. Acute Triangle:When all ...

1.11. Triangle Classification http://www.ck12.org Note that by the above definitions, an equilateral triangle is also an isoscel ...

http://www.ck12.org Chapter 1. Basics of Geometry We are told there are two congruent sides, so it is an isosceles triangle. By ...

1.11. Triangle Classification http://www.ck12.org Answers: Start by counting the smallest triangles, 16. Now count the triangle ...

http://www.ck12.org Chapter 1. Basics of Geometry 3. 4. 5. Can you draw a triangle with a right angle and an obtuse angle? Why ...

1.12. Polygon Classification http://www.ck12.org 1.12 Polygon Classification Here you’ll learn how to classify a polygon based o ...

http://www.ck12.org Chapter 1. Basics of Geometry A convex polygon does not share this property. Diagonalsare line segments that ...

1.12. Polygon Classification http://www.ck12.org TABLE1.1:(continued) Polygon Name Number of Sides Number of Diagonals Convex Ex ...

http://www.ck12.org Chapter 1. Basics of Geometry TABLE1.1:(continued) Polygon Name Number of Sides Number of Diagonals Convex E ...

1.12. Polygon Classification http://www.ck12.org Example C Which of the figures below isnota polygon? Cis a three-dimensional sh ...