Answer:
D
A right triangle is a triangle that has one 90 degree angle, so looking at the options i would say D
Step-by-step explanation:
I don’t know dude I am sorry but I don’t know
Answer:
AED and DEF
Step-by-step explanation:
Both on a straight line equal 180 degrees (90 + <E)
We are to select 2 people to sit in first row from 6.
This is a problem of Combinations. We are find permutation of 6 people taken 2 at a time. This can be represented as 6C2.
So, the answer is option B