Diagonals AC and BD form right angles at point M in parallelogram ABCD. Prove ABCD is a rhombus. Parallelogram A B C D is shown. Diagonals are drawn from point A to point C and from point B to point D and intersect at point M. Sides A B and D C are parallel and sides B C and A D are parallel. A square is drawn around point M. Statements Reasons 1. ABCD is a parallelogram 1. given 2. ∠AMB, ∠BMC, ∠CMD, and ∠DMA are right angles 2. given 3. ∠AMB ≅ ∠BMC ≅ ∠CMD ≅ ∠DMA 3. right angles are congruent 4. AC bisects BD; BD bisects AC; 4. diagonals of a parallelogram bisect each other 5. AM ≅ MC, MB ≅ MD 5. definition of a bisector 6. ? 6. SAS congruency theorem 7. AB ≅ BC ≅ CD ≅ DA 7. CPCTC 8. figure ABCD is a rhombus 8. definition of a rhombus △ABC ≅ △ADC ≅ △BAD ≅ △BCD △AMB ≅ △CMB ≅ △CMD ≅ △AMD △ABC ≅ △ADC ≅ △AMD ≅ △BMC △AMB ≅ △CMD ≅ △BAD ≅ △BCD

trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.