Answer:
D
Step-by-step explanation:
Given:
A figure of two congruent triangles.
To find:
The triangle congruence postulate by which the given triangles are congruent.
Solution:
First label the vertices as shown below.
In triangle ABC and triangle CDA,
(Given)
(Given)
(Common side)
The corresponding two sides and their included angle are congruent in both triangles. So, triangles are congruent by SAS congruence postulate.
[SAS congruence postulate]
Therefore, the correct option is B.
Option A because the whole triangle equals 180 degrees so as long as your option plus the numbers in the triangle equal 180° you will get it right
Answer:
Step-by-step explanation:
nth term = ar^(n-1)
a3 = 1/8; ar² = 1/8
a6 = 1; ar⁵ = 1


Answer: you're not an idiot