Are the following statements ALWAYS, SOMETIMES, or NEVER true?

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Presentation transcript:

Are the following statements ALWAYS, SOMETIMES, or NEVER true? A segment has two endpoints. Vertical angles are supplementary. A linear pair forms complementary angles. Adjacent angles form a linear pair. A ray has no endpoints. Perpendicular lines form congruent angles. Problem of the Day

Section 1-6 Two-Dimensional Figures

Then Now Objectives You measured one- dimensional figures. Find perimeter of two-dimensional figures.

Common Core State Standards Content Standards Mathematical Practices Common Core State Standards G.GPE.7 – Use coordinates to compute perimeters of polygons and areas of triangles and rectangles. 2) Reason abstractly and quantitatively. 6) Attend to precision.

Naming a Polygon

Equilateral Polygon: a polygon in which all sides are congruent Equilateral Polygon: a polygon in which all sides are congruent. Equiangular Polygon: a polygon in which all angles are congruent. Regular Polygon: a polygon that is both equilateral and equiangular. Vocabulary

Find the perimeter of ∆ABC with vertices A(-1, 4), B(-1, -1), and C(6, -1). Example 4

Find the perimeter of ∆ABC with vertices A(-1, 2), B(3, 6), and C(3, -2). Example 4