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Understanding Geometry: Naming Points, Lines, and Planes

In this geometry lesson, we explore how to name points, lines, and planes effectively. For example, two other names for line segment PQ are QP and line n. Similarly, plane R can also be referred to as plane SVT or plane PTV. Additionally, learn how to identify collinear points such as S, P, and T, and coplanar points like S, P, T, and V. This guide also includes helpful exercises to reinforce your understanding of these geometric concepts.

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Understanding Geometry: Naming Points, Lines, and Planes

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  1. a. Give two other names for PQand for plane R. b.Name three points that are collinear. Name four points that are coplanar. • Other names for PQare QPand line n. Other names for plane Rare plane SVT and plane PTV. EXAMPLE 1 Name points, lines, and planes SOLUTION

  2. EXAMPLE 1 Name points, lines, and planes b. Points S, P, and Tlie on the same line, so they are collinear. Points S, P, T,and Vlie in the same plane, so they are coplanar.

  3. 1. Use the diagram in Example 1. Give two other names for ST. Name a point that is not coplanar with points Q, S, and T. ANSWER TS, PT; point V for Example 1 GUIDED PRACTICE

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