Question | Answer |
pentagon | a polygon with 5 sides |
perpendicular lines | two lines that intersect to form a square corner |
plane | a flat surface with no boundaries |
point | a location that has no size |
polygon | a closed plane figure with straight sides; each side is a line segment |
quadrilateral | a polygon with 4 sides |
radius | the distance from the center of a circle to any point on the circle |
ray | part of a line with 1 endpoint |
rectangle | a polygon that has 2 pairs of opposite sides of equal length and 4 right angles |
rectangular prism | a three-dimensional figure with 6 faces that are rectangles |
rectangular pyramid | a three-dimensional figure with a base that is a rectangle and 4 triangular faces that meet at a point |
reflection | a movement of a figure to a new position by flipping the figure over a line |
right angle | an angle that forms a square corner |
right triangle | a triangle with 1 right angle |
rotation | a movement of a figure to a new position by turning the figure around a fixed point |
side | a line segment that is part of a shape |
sphere | a three-dimensional figure composed of the set of all points that are the same distance from a fixed point |
square | a polygon that has 4 equal sides and 4 right angles |
square pyramid | a three-dimensional figure with a square base and 4 triangular faces that meet at a point |
straight angle | an angle whose rays form a straight line |
three-dimensional figure | a figure that takes up space |
transformation | the movement of a figure by a slide, flip, or turn |
translation | a movement of a figure to a new position by sliding without turning or flipping it |
triangle | a polygon with 3 sides |
vertex [Lesson 4] | the point where 2 sides of a shape meet |
vertex [Lesson 8] | a point where edges meet |