Key Terms

Key Terms

10.1 Points, Lines, and Planes

  • line segment
  • plane
  • union
  • intersection
  • parallel
  • perpendicular

10.2 Angles

  • vertex
  • right angle
  • acute angle
  • obtuse angle
  • straight angle
  • complementary
  • supplementary

10.3 Triangles

  • acute
  • obtuse
  • isosceles
  • equilateral
  • hypotenuse
  • congruence
  • similarity
  • scaling factor

10.4 Polygons, Perimeter, and Circumference

  • perimeter
  • polygon
  • pentagon
  • hexagon
  • heptagon
  • octagon
  • quadrilateral
  • trapezoid
  • parallelogram
  • circumference

10.5 Tessellations

  • tessellation
  • translation
  • reflection
  • rotation
  • glide reflection

10.6 Area

  • triangle
  • square
  • rectangle
  • rhombus
  • apothem
  • radius
  • circle

10.7 Volume and Surface Area

  • surface area
  • volume
  • right prism
  • right cylinder

10.8 Right Triangle Trigonometry

  • right triangle
  • sine
  • cosine
  • tangent