A coplanar point are points that lie on the same line. An angle is the intersection of two noncollinear rays at a common endpoint. The rays are called sides and the common endpoint is called the vertex.
hope that helps
Answer:

Step-by-step explanation:
Let sides of the triangle be 

Semi-perimeter (s) = 

Area of one tile 

So,
Area of 20 tiles 
Cost of polishing the floor at the rate of 2 rupees per sq.cm = 
Just distribute! its 2/15 - 9/25w
8 x 615 is 4920.
615
x. 8
______
put a 4 above the one and a 1 above the 6.
Answer:
12. 5
11.
10
10
15. 7
14. 11
2
=
16
16
18. 3
+
11
17
3
4
'
co
loo
8
Step-by-step explanation:
12. 5
11.
10
10
15. 7
14. 11