Use one of your new conjectures to find the lettered angles measures.

72 degrees

Step-by-step explanation:

A straight line has a measure of 180 degrees. If you subtract 144 degrees from the 180 degrees, you're left with 36 degrees as one of your inside angle measures. Like a straight line, the angles inside any triangle add up to 180 degrees. So subtract 36 degrees from 180 degrees and you're left with 144 degrees. Since the remaining 2 angles inside the triangle are congruent, they have the same measurement. So all you have to do is divide 144 by 2 and you're left with 72 degrees as your x value.

answer: sine

step-by-step explanation:

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 : )