Simplify the expression 6h+​(−7.7d​)−18+5d−2.8h
.​

What is the size of the matrix resulting from

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

Use complete sentences to differentiate between a regular tessellation, and a pure tessellation. be sure to include specific types of polygons in your explanation.