Question

Find the 2D shapes that have created the given 3D shape.

• A. A pentagon and trapezoids
• B. A rectangle and triangles
• C. Triangles and a square
• D. A square and rectangles

Answer 1

The correct option is C Triangles and a square

Say:
Let us identify the shape of all the faces of this given square pyramid.

Steps:
$\bullet$ The base has 4 equal sides and 4 corners.

$\bullet$ So, this is a square.

$\bullet$ The other faces have 3 sides.

$\bullet$ It also has 3 corners.

$\bullet$ So, these are triangles.

$\bullet$ Hence, triangles and a square are used to create the 3D shape, and Option A is the correct answer.

Probing/ error analysis questions/ whiteboard
Q. The shape of all the yellow faces is a rectangle, right?
Ans: No. The face opposite to the pink face is also a triangle in yellow.