Tiana has a triangular piece of construction paper. she cuts the paper into three pieces.
then, she rearranges the three pieces as shown.
what do the pieces of tiana's triangle show?
a
the sum of the interior angles of a triangle is equal to the sum of the interior angles of a quadrilateral
the sum of the interior angles of a triangle is equal to the measure of a straight angle.
the sum of two interior angles of a triangle is equal to the measure of a right angle.
the sum of the interior anales of a triangle is equal to the sum of the interior anales of a pentagon

  The sum of the interior angles of a triangle is equal to the measure of a straight angle

Step-by-step explanation:

The bottom edge of the second figure (where the colored angles all have the same vertex) is a straight angle. Hence that figure shows ...

  The sum of the interior angles of a triangle is equal to the measure of a straight angle

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2