Question

Tina described four triangles as shown below:

Triangle A: All sides have length 12 cm.
Triangle B: Two sides have length 10 cm, and the included angle measures 60°.
Triangle C: Base has length 15 cm, and base angles measure 40°.
Triangle D: All angles measure 60°.

Which triangle is not a unique triangle?

Triangle A
Triangle B
Triangle C
Triangle D

Answer 1

a

Answer 2

do you know why?

Answer 3

triangle A because its is an equilateral triangle, its not unique

Answer 4

yup i could not say it better

Answer 5

lol, just ask if you need anymore help

Answer 6

do you know why?