Getting Into Shapes: Ch.1 L.1 Vocabulary Review

an angle whose measure is greater than 0⁰ but less than 90⁰

• acute angle
• obtuse angle
• right angle
• reflex angle

a shape that connects back on itself and can be drawn using one continuous stroke

• closed shape
• obtuse angle
• parallel lines
• acute angle

two figures that are identical in size and shape but may have a different location or orientation

• congruent
• parallel
• perpendicular
• polygon

an angle whose measure is greater than 90⁰ but less than 180⁰

• obtuse angle
• acute angle
• reflex angle
• right angle

two or more lines in the same plane that do not intersect and remain a constant distance from one another

• parallel lines
• perpendicular lines
• intersecting lines
• polygons

a quadrilateral whose opposite sides are equal in length and parallel

• parallelogram
• polygon
• trapezoid
• congruent

two lines that intersect to form right angles

• perpendicular lines
• parallel lines
• straight lines
• diagonal lines

a simple, closed shape with three or more line segments as sides

• polygon
• right angle
• congruent
• intersecting lines

a polygon with four sides

• quadrilateral
• triangle
• hexagon
• octagon

a parallelogram with four right angles

• rectangle
• triangle
• trapezoid
• hexagon