Geometry Essentials Quarter 1 Essentials Understand and use common Geometry vocabulary, figures and nomenclature Write and interpret valid conditional statements, biconditionals, inverses, converses, and contrapositives. Use logic to draw valid conclusions from given information. Use knowledge of parallel lines, transversals and the angles formed to solve figures and justify the results Apply the properties of triangles and polygons to find unknown measures Example Given a figure, use proper notation to list 2 rays, 1 line, etc. Determine the validity of the converse of the statement: “If it’s a bird, then it sings.” Justify your answer. Given: All birds love prunes. Polly loves prunes. Draw a valid conclusion OR, if no valid conclusion can be drawn, explain why. Given 2 parallel lines, 2 transversals and an angle measure, determine missing angle measurements. Given any polygon and n-1 interior angle measures, find the missing angle measure.