3 ft A building is 1 ft from a 9-ft fence that
surrounds the property. A worker wants
to wash a window in the building 12 ft
from the ground. He plans to place a
ladder over the fence so it rests against
the building. (See the figure.) He
decides he should place the ladder 7 ft
from the fence for stability. To the
nearest tenth of a foot, how long a
ladder will he need?
9 ft
7 ft
1 ft
He will need a ft ladder
(Type an integer or decimal rounded to the nearest tenth as needed.)

hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!

solution:

we have to construct

∠m nt ≅ ∠p qr

the steps to draw this construction are

step 1: use a compass to draw an arc from point q which intersects the side pq at point a and the side qr at point b.

step 2: draw a segment nt and use the same width of the compass to draw an arc from point n which intersects the segment nt at a point x.

step 3:

step 4: join points n and y using a straightedge.

step 3:

option (d).maintaining the same width of the compass as ab, draw an arc from point x such that it intersects the arc drawn from n in a point y.

to draw   congruent angles , 1. width of compasses while drawing two angles should be same i.e from point at which angle has to be drawn, 2.the distance between the two points where the compass intersects the two sides should be same while drawing any two congruent angles.