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If two lines intersect then the vertical angles formed must be?
Equal angles.
Vertical angles must be adjacent?
No.
Are parallels lines angles?
No. To be an angle, the ends of each ray must have the same endpoint, therefore, the lines must intersect. Parallel lines have the same slope, so cannot ever intersect.
Is it true that A regular polygon must have equal side lengths and equal angles?
Yes
Is it possible to have two lines intersect that form four acute angles?
No, all the angle measures have to add up to 360 and opposite angles must be equal. So, you can only have two acute angles.
If two lines intersect then the vertical angles must be?
Equal angles.
If two lines intersect then the vertical angles formed must be?
Equal angles.
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.
Can a regular polygon have equal side lengths but not have equal angles?
No, for a polygon to be regular it must have equal side lengths and angles.
Verticle angles must be what?
Vertical, possibly!
Two lines which intersect to form right angles?
...must be coplanar.
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.
Vertical angles must have?
have the same vertex. be congruent.
Are parallels lines angles?
No. To be an angle, the ends of each ray must have the same endpoint, therefore, the lines must intersect. Parallel lines have the same slope, so cannot ever intersect.
Can 2 line be intersecting perpendicular?
Perpendicular lines intersect at right angles. (90°) Therefore, by the definition of perpendicularity, two perpendicular lines must intersect.
