Geometry

logos mean"study" or in philosophies it means "word" (in Greek) also "a cosmic oder that determines change.

all of them are collinear

they lie in the same plane

True
It is true that the body of an indirect proof you must show that the assumption leads to a contradiction. In math a proof is a deductive argument for a mathematical statement.

True

For Apex the answer is “True“.

Geometric space is three dimensional and infinitely large.

if its September its your birthday

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

The figure has no complementary pairs of angles.

true

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

A conclusion provided by deductive reasoning

The term that best describes a proof in which you assume the opposite of what you want to prove is 'indirect proof'.

In a two-column proof, it is true that the left column states your reasons.

A plane.

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.

True

Flowchart proof

FALSE

Boxes and arrows.

(apex) its 110

Corollary.

Theorem.

Definition.

Postulate.