need help please 10-3

Question

Answer 1

(4)

Draw the related diagram:

The two triangles and have common base .

The two triangles lies between two parallel lines and .

The area of the is .

The area of the triangle is .

The height between the two parallel lines is always same.

The area of the is .

When two triangles have the common base and are between two parallel lines, they have equal area.