General Vocab/3d Shapes

Across
1.	THE SHAPE YOU GET WHEN CUTTING THROUGH A 3D SHAPE WITH A 2D SHAPE
3.	A SOLID WITH A SQUARE BASE AND 4 TRIANGULAR FACES THAT MEET AT A TIP
7.	A LINE SEGMENT WHICH JOINS TWO VERTICES
10.	A SOLID WITH 2 CIRCULAR BASES CONNECTED BY A CURVED SURFACE
11.	A SOLID WITH 20 EQUILATERAL TRIANGULAR FACES
14.	A SOLID WITH A HEXAGONAL BASE AND SIX TRIANGULAR SIDES THAT MEET AT A TIP
15.	A PRISM WITH RECTANGULAR BASES
18.	A SOLID WITH 4 PLANE TRIANGULAR FACES AKA A TRIANGULAR PRISM
19.	A FLAT SURFACE ON A SOLID
20.	AREA THE SUM OF THE AREA OF EACH FACE
21.	A SOLID WITH 8 EQUAL TRIANGULAR FACES

Down
2.	A ROUNDED SOLID WHERE ALL POINTS ARE EQUAL DISTANCE FROM THE CENTER
4.	HOW COMPACT SOMETHING IS IN AN OBJECT
5.	A 3 DIMENSIONAL SHAPE
6.	A SOLID WITH A PENTAGONAL BASE AND 5 TRIANGULAR SIDES THAT MEET AT A TIP
8.	A SOLID WITH 12 PENTAGONAL FACES OF EQUAL AREA
9.	A SOLID WITH 2 TRIANGULAR BASES AND 3 RECTANGULAR SIDES
12.	A PRISM WITH A HEXAGONAL BASE
13.	THE POINT AT WHICH TWO LINE SEGMENTS JOIN IN A SOLID
16.	A SOLID WITH 6 SQUARE FACES OF EQUAL AREA
17.	A SOLID WITH A CIRCULAR BASE THAT TAPERS SMOOTHLY TO A VERTEX