Answer:
Step-by-step explanation:
Perpendicular lines meet each other always at an angle of 90 while intersecting lines may or may not have an angle of 90.
Their opposite angles(made by intersecting lines) are always same.
And even, we can say every perpendicular lines as intersecting but can't say that every intersecting line is perpendicular.
Answer: 
The area of a triangle is given by:
Where:
is the base of this right triangle
is the height of the triangle
Substituting the known values:
Finally, the area of this triangle is:
