1. Tyrone built a rectangular prism using building blocks shaped like cubes. • The edge of each building block was 1 inch. • Tyrone used 64 building blocks to make the first layer of the rectangular prism. • Tyrone added 5 more layers to finish his rectangular prism. What is the volume of Jimmy's rectangular prism? A 119 cubic inches B 320 cubic inches C 370 cubic inches D 329 cubic inches

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle