1) an angle with a measure of 90° is called a(n) angle 2) an angle with a measure between 90° and 180° is called a(n) angle

3) an angle with a measure between 0° and 90° is called a(n) angle

4) an angle with a measure of 180 is called a(n) angle

The product of two negative rational numbers is always zero sometimes zero never zero

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.