Glencoe Geometry Concept 1 Example 1 Identify Parallelograms Determine whether the quadrilateral is a parallelogram. Justify your answer. Answer: Each pair of opposite sides…

Concept 1 Example 1 Identify Parallelograms Determine whether the quadrilateral is a parallelogram. Justify your answer. Answer: Each pair of opposite sides has the same…

Chapter 1 Section 1.5 Angle Pair Relationships Linear Pair Two adjacent angles form a linear pair if their noncommon sides are opposite rays. Form a straight angle. Any two…

Section 6.3 Section 6.3 Tests for Parallelograms If a quadrilateral has each pair of opposite sides parallel, it is a parallelogram by definition.   This is not the only…

Splash Screen Lesson Menu Five-Minute Check (over Lesson 6–2) Then/Now Theorems: Conditions for Parallelograms Proof: Theorem 6.9 Example 1: Identify Parallelograms Example…

Splash Screen Then/Now You classified polygons with four sides as quadrilaterals. (Lesson 1–6) Recognize and apply properties of the sides and angles of parallelograms.…