SOLUTION: If you can not answer all of my question it is fine but i would like some help on these problems:
The choices for the answer are Sometimes, Always, or Never:
1. A ray has two end
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Question 694165: If you can not answer all of my question it is fine but i would like some help on these problems:
The choices for the answer are Sometimes, Always, or Never:
1. A ray has two endpoints
2. An angle is equal to its supplement
3. A right triangle is isosceles
4. The complement of an acute angle is an obtuse angle
5. Two lines perpendicular to a third line are skew
6. Two skew lines are coplanar
7. If two angles have a common side, the angles are adjacent
8. The supplement of an obtuse angle is an obtuse angle
Thanks
Found 2 solutions by jim_thompson5910, mananth:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
1. A ray has two endpoints .... never
It only has one endpoint. Always.
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2. An angle is equal to its supplement
Sometimes and this is only true if you have a right angle
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3. A right triangle is isosceles
sometimes
only if you have a right isosceles triangle
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4. The complement of an acute angle is an obtuse angle
This is never true
draw a picture to see this, but you'll see the other angle isn't obtuse since it's acute as well.
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5. Two lines perpendicular to a third line are skew
This is sometimes true. It depends on if you are in 3d space or the plane. If you are in the plane, then it's never true. However I'm saying "sometimes" because I'm thinking the problem is thinking 3d space.
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6. Two skew lines are coplanar
This is never true because if it were, then the two lines would intersect and not be skew.
-------------------------------------------------------
I'll let you tackle the last two.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
1. A ray has two endpoints
Never
2. An angle is equal to its supplement
sometimes
3. A right triangle is isosceles
sometimes
4. The complement of an acute angle is an obtuse angle
Never
6. Two skew lines are coplanar
Never
7. If two angles have a common side, the angles are adjacent
Always
8. The supplement of an obtuse angle is an obtuse angle
Never
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