In isosceles triangle ARST, RS is congruent to ST and the measure of one base angle ZR is 67.5°. What is the
measure of vertex angle ZS?
O 13.5 degrees
O 45 degrees
O 67.5 degrees
O 85 degrees
O 135 degrees

What is the product of the radical expression. (7-2square root) (8+2 square root)

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30