Cards in this guide (21)
Is it possible for two skew lines to be perpendicular
perpendicular lines are lines that MEET at right angles (90
degrees). Skew lines are lines that dont meet at all. Even though
the gradients of two skew lines can multiply to be -1 (a property
of perpendicular lines) They will not really be perpendicular as
they don't accually meet. This can occur when the lines are in
different planes.
Do the angles that form a linear pair have to be adjacent
The measures of two adjacent interior angles sum to 180 because they form a linear pair.
B. False
Which of the following is the converse of the statement If it your birthday then it is September
if its September its your birthday
If you took an if then statement inserted a not in each clause and reversed the clauses the new statement would also be true
Angle formed by supplementary and complementary angles
Supplementary angles forms a 180o angle (or a straight line).
Complementary angles form a 90o angle.
Quadrilateral ABCD is a parallelogram in which angle A equals 40 degrees Which two angles below are complementary
A and B, B and C, C and D, D and A, are all supplementary
pairs.
The figure has no complementary pairs of angles.
Is it true that if you took an if-then statement inserted a not in each clause and reversed the clauses the new statement would also be true
If the conditional (if, then) is true, then the contrapositive (reversed; if not, then not) will be also true. And vice versa, if the conditional is false, its contrapositive will be also false. for example,
If a graph passes the vertical line test, then it is a graph of a function. (True)
If a graph is not a graph of a function, then it will not pass the vertical line test. (True)
Yes, but only if the original if-then was true.
What is the converse of the statement if it is summer then its warm outside
The converse of the statement "If it is summer, then it is warm
outside' would be if it is warm outside then it is summer.
What is the inverse of this statement
What isn't the inverse of this statement(?)
How does biconditional statement different from a conditional statement
a condtional statement may be true or false but only in one
direction
a biconditional statement is true in both directions
Which of the following is the inverse of the statement 'if like math then i like science
If I do not like Math then I do not like Science.
True of false in a two-column proof the left column states your reasons
In a two-column proof, it is true that the left column states
your reasons.
Why can't a quadrilateral have four obtuse angles
The sum of the 4 internal angles of a quadrilateral must sum to
360° (go look up the proof of this elsewhere).
For the sake of argument, let's call the 4 internal angles of a
quadrilateral A, B, C, and D.
If they were all obtuse, then (by definition):
180° > A > 90°
180° > B > 90°
180° > C > 90°
180° > D > 90°
If you add them all up, you find that for the sum of the angles
A+B+C+D
720° > A + B + C + D > 360°
but, A+B+C+D = 360°,
Since the assumption produces a result that contradicts this,
the assumption cannot be true.
Q.E.D.
The second statement is the what of the first.
Choose the true biconditional statement that can be formed from the conditional statement If the area of a square is 25 square meters then the side length of the square is 5 meters and its converse.
The area of a square is 25 square meters if and only if the side length of the square is 5 meters
True or false A corollary is a statement that can be easily proved using a theorem.
True or false If you took a true if-then statement and reversed the clauses the new statement would also be true.
True or false if you took a true if then statement inserted a not in each clase and reversed the clauses the new staement would also be true
True. In that case, each of the statements is said to be the
contrapositive of the other.
If point C is between points A and B then AC plus CB .
The real answer is Bc . Hate these @
Which of the diagrams below represents the statement If it is a square then it is a quadrilateral
Choose the true biconditional statement that can be formed from the conditional statement If a natural number n is odd then n2 is odd and its converse.
An integer n is odd if and only if n^2 is odd.