1.why can’t a triangle be congruent to a quadrilateral ?

2.why can’t an isosceles triangle be congruent to a triangle that is not isosceles ?

i did it but my math teacher said it was wrong.

Step-by-step explanation:

1. A triangle has three sides where as a quadrilateral has four sides.

2. in an isosceles two sides are equal ,in a non isosceles no two sides are equal.

15.5

step-by-step explanation:

5

∑

n = 1

substitute n = 1, 2, 3, 4, 5 and sum the terms

= + + + 2² + 2³

= 0.5 + 1 + 2 + 4 + 8

= 15.5

a

step-by-step explanation:

the answer is a