Scroll to bottom of page for video examples of the unit lessons
OverviewIn this unit students will:
• draw geometric figures using rulers and protractor with emphasis on triangles • write and solve equations involving angle relationships • explore two-dimensional cross-sections of cylinders, cones, pyramids, and prisms • know and use the formula for the circumference and area of a circle • solve engaging problems that require determining the area, volume, and surface area of fundamental solid figures. |
Vocabulary
• Adjacent Angle: Angles in the same plane that have a common vertex and a common side, but no common interior points.
• Circumference: The distance around a circle. • Complementary Angle: Two angles whose sum is 90 degrees. • Congruent: Having the same size, shape and measure. ∠A ≅∠ B denotes that ∠A is congruent to ∠B. • Cross- section: A plane figure obtained by slicing a solid with a plane. • Irregular Polygon: A polygon with sides not equal and/or angles not equal. • Parallel Lines: Two lines are parallel if they lie in the same plane and they do not intersect. AB || CD denotes that AB is parallel to CD . • Pi: The relationship of the circle’s circumference to its diameter, when used in calculations, pi is typically approximated as 3.14; the relationship between the circumference (C) and diameter (d), 𝐶 ≈ 3 1/7 or 3.14 or 22/7 • Regular Polygon: A polygon with all sides equal (equilateral) and all angles equal (equiangular). • Supplementary Angle: Two angles whose sum is 180 degrees. • Vertical Angles: Two nonadjacent angles formed by intersecting lines or segments. Also called opposite angles. |
Unit 5: Lesson 1-6 Examples
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