Both A and B
Explanation:
Ribbed vaulting is an architectural element widely used in Gothic architecture buildings. It is a derivation of the so-called edge vault, which is distinguished by the use of structural diagonal ribs that support its weight and discharge it on composite pillars or polystiles) and to which they belong, and generally identified with them, the so-called warhead vaults (also referred to as crossover warhead vaults) and rib vaults (also referred to as rib vaults). This architectural element can be seen in Durham Cathedral and St. Etienne Cathedral.
Answer:
Which sentence features an introductory clause that explains why the main action happened? its 3, Worried about her sister, Kayla called Jayla's cell phone.
Which sentence features an introductory phrase that explains why the main action happened? its 4 Because she took her eyes off the road to answer the phone call, Jayla lost control of her car and crashed through the front of Kayla's house.
good luck:D
In mathematics, space was created in order to do following tasks
<span> a. varying the sizes of the objects to create and illusion of depth.
b. curving the forms of certain objects, such as the bookshelf and ceiling, in order to create the 3-dimensional sphere of the mirror.
c. leading the eye to a primary focal point (the man), and the rounding everything out.
so the answer is
</span>Escher created space by <span>including all of the above aspects.</span>
