Question

ABCD is a parallelogram with AD parallel to BC. if R is any point on AD, then find the area of triangle BRC.

Answer 1

Answer:


Step-by-step explanation:

Since AD||BC

According to Therom.

Any point on a parallelogram which is on its parallel side and form triangle equal to half of area of parallelogram

Area of parallelogram= base ×

Height

Therefore area of triangle is

1/2 ×base xheight Ans

Answer 2

Solution:
Draw a line RS from point R & perpendicular to the line BC meeting at point S on BC (as shown in fig.).

Area of Parallelogram ABCD = Base × Height
= BC × RS

Also area of Triangle BRC = 1/2 × Base × Height
=1/2 × BC × RS

Therefore, from the above conditions the area of Triangle BRC = 1/2 × Area of Parallelogram ABCD.

Hope you got it!