Go through the Spectrum Math Grade 2 Answer Key Chapter 7 Lesson 7.2 Solid Shapes and get the proper assistance needed during your homework.
Spectrum Math Grade 2 Chapter 7 Lesson 7.2 Solid Shapes Answers Key
Circle the shape named.
rectangular solid
Answer:
Rectangular solids are 3D shapes with six rectangular sides that all meet perpendicularly. The volume is given by the product of the three different edge lengths. The surface area is the sum of 2hw + 2dw + 2hd.
square pyramid
Answer:
A three-dimensional geometric shape having a square base and four triangular faces/sides that meet at a single point (called a vertex) is called a square pyramid. It is called a pentahedron, due to its five faces. A square pyramid has:
– An apex: top vertex or point of the pyramid
– A Base in a square shape
– Four triangular faces
properties of the square pyramid:
– It has 5 Faces
– The 4 Side Faces are Triangles
– The Base is a Square
– It has 5 Vertices (corner points)
– It has 8 Edges
sphere
Answer:
the sphere is a geometrical figure that is round in shape. The sphere is defined as a three-dimensional space. The sphere is three dimensional solid, that has surface area and volume. Just like a circle, each point of the sphere is at an equal distance from the centre.
Properties of the sphere:
– A sphere is perfectly symmetrical
– A sphere is not a polyhedron
– All the points on the surface are equidistant from the centre
– A sphere does not have a surface of centres
– A sphere has constant mean curvature
– A sphere has a constant width and circumference.
cube
Answer:
a cube is a 3-D solid shape, which has 6 faces. A cube is one of the simplest shapes in three-dimensional space. All six faces of a cube are squares, a two-dimensional shape.
Properties:
– It has all its faces in a square shape.
– All the faces or sides have equal dimensions.
– The plane angles of the cube are the right angle.
– Each of the faces meets the other four faces.
– Each of the vertices meets the three faces and three edges.
– The edges opposite to each other are parallel.
Answer the questions about the shapes above.
Which shape has 4 triangular faces?
Answer:
Square pyramid has four triangular faces.
Which shape has 6 rectangular faces?
Answer:
Rectangular solids are 3D shapes with six rectangular sides that all meet perpendicularly. The volume is given by the product of the three different edge lengths. The surface area is the sum of 2hw + 2dw + 2hd.
Which shape is like a 3-D circle?
Answer:
The 3D equivalent of a circle is a ball, not a sphere since a sphere is just a surface The sphere is the 3D equivalent of a circumference. The ball, however, is a three-dimensional (3D) shape because it has three measurements (length, height, and width) and is sometimes called a ‘solid’ shape.
Which shape has 6 equal faces?
Answer:
A cube has 6 square faces.