If these are the missing parts:
What is the quadrilateral?
a.rhombus
b. rectangle
c. trapezoid
<span>d. square
The quadrilateral formed by the </span><span>two equilateral triangles taped together is A. RHOMBUS.
Rhombus has equal sides but its is different from a square because it looks like a diamond.
Rhombus also have parallel opposite sides and equal opposite angles. </span>
What is the quadrilateral?
a.rhombus
b. rectangle
c. trapezoid
<span>d. square
The quadrilateral formed by the </span><span>two equilateral triangles taped together is A. RHOMBUS.
Rhombus has equal sides but its is different from a square because it looks like a diamond.
Rhombus also have parallel opposite sides and equal opposite angles. </span>