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C.
have the same vertex.
done
D.
be congruent
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What is the difference between vertical angles and congruent angles?
not all congruent angles are vertical angles. Vertical angles must share a vertex.
Can vertical angles be complementary?
Vertical angles must be congruent so if they are complementary, they must be 45 degrees to be complementary.
Vertical angles must be adjacent?
No.
If two lines intersect then the vertical angles must be?
Equal angles.
Verticle angles must be what?
Vertical, possibly!
What is a counter example for the statement congruent angles are always vertical angles?
Vertical angles must necessarily be congruent, however congruent angles do not necessarily have to be vertical angles. An example of congruent angles which are not vertical angles are the 3 interior angles of an equilateral triangle. These angles do not share the same vertex yet they are congruent.
If two lines intersect then the vertical angles formed must be?
Equal angles.
Vertical angles must have?
have the same vertex. be congruent.
Why vertical angles must always be congruent?
Because if they werent, they would eventually form an angle.
Vertical angles can not be obtuse angles?
they can be obtuse say ther are two lines intersecting two of the angles are acute (50degrees) that means the other pair must be obtuse 180-50=130 so the other two angles are obtuse with a measurement of 130degrees
Angles that are congruent and supplementary must be?
Angles that are congruent and supplementary must be right angles.
A carpenter is making a brace for a chair to do so she intersects two pieces of wood to make two sets of vertical angles the obtuse angles formed are 145 what is the measurement of each acute angle fo?
The measurements of these two sets of vertical angles should add to 360. If two of the corresponding angles are 145, that means 290 degrees of that total 360 are taken up. 70 degrees is needed to make 360 (360 - 290 = 70). As the two acute angles must be equal, they are each 35 degrees.
