Congruent line segments have the same length and line segments that have the same length are congruent. if two angles form a linear pair, then they are supplementary angles. if pont d lies in the interior of ∠ abc, then m∠abc + m∠dbc = m∠ abc if b is between a and c, a, b, and c are co-linear and ab + bc = ac. if two angles have the same measure as measured by ta protractor, then the angles are congruent. also, if two angles are congruent, then they have the same measure. 1. the segment addition postulate 2. the segment congruence postulate 3. angle addition postulate 4. angle congruence postulate 5. linear pair postulate

78.59 is the mean

step-by-step explanation:

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation:

it would open into a square depending on the type of envelope i’m not sure about the second part

a

step-by-step explanation: