Rotational & Lines of Symmetry
What order of rotational symmetry does an equilateral triangle have?
Order 3
What is a shape with 4 sides called?
Quadrilateral
True or False... The side view can look the same as the front view.
True
I have a circle base and one point at the top, what 3D shape am I?
An angle that measures exactly 180° is called a
Straight Angle
What order of rotational symmetry does an octagon have?
Order 8
What shape is this? (draw on board)
Rhombus
Which view does NOT show an object's height?
The Top View
A net with four triangles and one square when folded up into a 3D shape is called?
a Square Based Pyramid.
An angle that measures more than 180° but less than 360° is called a?
Reflex Angle
On the board, construct 2 shapes that have rotational symmetry "order 2"
(shapes on the board)
- could be parallelogram or rectangle
Name 1 shape that has diagonals that are perpendicular.
Options:
Rhombus, Square, or Kite
The top view is a circle, and the front view is a rectangle, what 3D shape is this?
Cylinder
What shape has no vertices, edges, or faces?
Sphere
Two angles that add up to 90° are called?
Complementary
What shape has 4 lines of symmetry AND order 4 rotational symmetry?
Square
All parallelograms have two pairs of __________ sides that are also equal.
parallel
The view that changes depending on which side you look from is the?
Side View
Triangular Prism
The angles outside a polygon, formed by extending a side, are called?
Exterior Angles
How many lines of symmetry does a circle have?
infinite.
All ___________ trapezoids have one pair of equal sides.
isosceles
The view that is most helpful for measuring the height of an object is the?
Front View
I could be 2 different 3D Shapes. However, we share the same amount of faces, edges, and vertices.
Faces: 6
Edges: 12
Vertices: 8
Cube and Rectangular Prism
When two lines intersect, the angles that are across from each other are called?
Opposite Angles