Answer:
a quadrilateral is a polygon with 4 sides and for corners
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
5(2x+4)=30
10x+20=30
10x=10
x=1
Answer:
The sin A expressed in ratio form is 
Step-by-step explanation:
From the given right angled triangle diagram, sin A is calculated as follows;

Therefore, the sin A expressed in ratio form is 
Answer:
The perimeter is 6x+8
Step-by-step explanation:
2(2x+3) +2(x+1)
4x+6+2x+2
6x+8