If two angles of a triangle have measures of 42 degrees and 20 degrees what is the measure of the third

Classify the polygon by its number of sides. state whether the polygon appears to be regular or not regular. a. heptagon, regular b. heptagon, not regular c. octagon, regular d. octagon, not regular

Which of the following expressions is equal to 2x^2+8

The perimeter of a rectangle is greater than or equal to 74 meters. if the length is 25 meters, the minimum width of the rectangle is meters.