Match the reasons with the statements in the proof to prove that triangle abc is congruent to triangle abd, given that ab ⊥ bd, ab ⊥ bc, and ac = ad.

given:

ab ⊥ bd

ab ⊥ bc

ac = ad

prove:

△abc ≅ △abd

1. ab ⊥ bd, ab ⊥ bc, ac = ad

given
2. ∠abc and ∠abd are right angles

perpendicular lines form right angles
3. ab = ab hypotenuse -

leg postulate
4. △ abc ≅ △ abd

reflexive property of equality

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

step-by-step explanation:

-3.5 degrees per hour

step-by-step explanation:

find the unit rate:

-12   1/4 degrees           12.25 degrees

= - = -3.5 degrees per hour

      3   1/2 hours               3.5 hours