Geometry Help??!?!?

Question

1.)Two angles in a plane that hhave a common vertex and a common side but no common interior are called ____ angles.

2.)How many lines can be drawn through 2 giveen points?

3.)If two lines intersect, then they intersect in exactly one ______.

4.)If two planes intersect, then their intersection is a _____.

5.)Write hypothes, the conclusion and conveerse of the conditional statement.

If R is a straight angle, then m angle R= 180.

a.)Hypothesis:
b.)Conclusion:
c.)Converse:

6.)Name the property of algerbra or of congruence which justifies each statement.
a.)If x+3=18, then x=15 ____
b.)If m angle P+m angle S+m angleT=180 and m angleT = 40, then m angles P + m angle SS + 40= 180.

Answer 1

1) Adjacent
2) only one
3) point
4) line
5) a) By definition, straight angles measure 180 degrees. I meaured angle R and it is 180 degrees
b) Therefore, angle R is a straight angle.
c) I meaured angle R and it is 178 degrees, so it is not a straight angle
6) a) Property of Equality using the Additive Inverse : You can add or subtract the same quantity from both sides of an equation, and not change its value
b) The Property that states that the sum of the angles in a triangle always equals 180 degrees. We also know that m angle P + m angle S = 140 here, since 180 - 40 = 140

Answer 2

1 adjacent
2 1
3 point
4 point
5 a
6 addition property
distributive

Answer 3

1. straight
2. 2
3. point
4. adjacent
5. converse
6. do to the both sides the same operation but the different operation that is already in the equation.

Answer 4

2) 1 line
3) point
4) point
6) yes

Answer 5

1. ?

2. 1

3. point

4. line

5. ?

Answer 6

u should do your own homework