Answer:
hope you understand the answers
Interior angles of a triangle should always add up to 180.
180-154=26
26-13=13
X=13
You are correct there's at least one obtuse angle
Answer:
r = 1
Step-by-step explanation:
In this question, we have to solve for the vallue of "r". We will use the distributive property shown below to ease our process.
Distributive Property:
a(b+c) = ab + ac
Now, lets solve this:

As we have seen the value of r is "1"