Vertices A (-1,1) and Vertices B (-4,1) of Square ABCD are shown below. What is the perimeter? Hint: find the Vertices C and D first, then find the perimeter. A square is the same length all around!

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Prove that 16^4-2^13-4^5 is divisible by 11.

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels