Which is the correct formula to find the area of abc?
a.
area of δ abc = × bc × ae
b.
area of δ abc = × ab × ae
c.
area of δ abc = × bc × ad
d.
area of δ abc = × ac × bc

 C.

Step-by-step explanation:

The common formula is used to find the area of a triangle is

In the given picture , we have a triangle ABC , in which Altitude (making right angle with base) of triangle = AD with corresponding base = BC

Thus , the area of the triangle will be :

Therefore , the correct options is

C.

r and t.

both are 64 degrees.

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)