If three sides of a triangle are horizontal, vertical, and vertical is it a right triangle or a non right triangle

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height

Scenario: susan wants to make 2 square flags to sell at a crafts fair. the fabric she wants to buy is 3 meters wide. she doesn't want any fabric left over. what's the least amount of fabric she should buy? question: which equation will susan solve her problem? note: let x represent the length of 1 side of the flag. options: 1) 2x^2 = 4x 2) 8 +2x = 2(4x) 3) 2 * 2 = 4 * 2 4) 4x^2 -2x = 0

Can anyone explain to me how to do this? anything will .