Geometry

This is the definition of a circle.

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.

Parallel lines are at least two lines that never cross and run forever.

the first is "all statement" and the second is " existential statement"

Your sister is your female relative who shares the same mother and father as you do. If she shares only one parent, she is your half sister.

I'm thinking real sunny out

If a conditional statement is true, then so is its contrapositive. (And if its contrapositive is not true, then the statement is not true).

if its September its your birthday

true

A biconditional is the conjunction of a conditional statement and its converse.

A and B, B and C, C and D, D and A, are all supplementary pairs.

The figure has no complementary pairs of angles.

What isn't the inverse of this statement(?)

sure

Isosceles :)

After stating a hypothesis, what is the next step that a physicist is most likely to take in answering a question?A.Planning and performing an experiment to answer the question

bird

yes

Reasons

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 real answer is Bc . Hate these @

An integer n is odd if and only if n^2 is odd.

Is this statement true or false?

Plagiarizing is acceptable if it is only a phrase or a word.

Is this statement true or false?

Plagiarizing is acceptable if it is only a phrase or a word.

Prime numbers have rwo facrors

false