Properties 2

Question 1

Angle 1 plus angle 2 equals 180

Answer 1

Linear pair post

Question 2

If angle 1 is complementary to angle 2, then angle 1 plus angle 2 equals 90

Answer 2

Def of comp angles

Question 3

If angle 3 is supplementary to angle 4, then angle 3 plus angle 4 equals 180

Answer 3

Def of supplementary angles

Question 4

If angle 1 is a right angle then angle 1 is 90

Answer 4

Def of right angle

Question 5

If L is perp to M then angle 1 and angle 2 are right angles

Answer 5

Def of perp

Question 6

Angle 1 plus angle 2 equals angle ABC

Answer 6

Angle addition post

Question 7

Perpendicular angles

Theorem

Answer 7

If 2 lines are perpendicular, then they form congruent adjacent angles

Question 7

~ adj.

Answer 7

If 2 lines form ~ adj. angles, then they are perpendicular

Question 8

If ext sides are comp

Theorem

Answer 8

If exterior sides of 2 adj. acute angles are perp, then the angles are comp

Question 9

If two angles are suppl.

Theorem

Answer 9

If 2 angles are suppl. Of congruent angles, then the two angles are congruent
(Congruent suppl. Theorem)

Question 10

If angles are comps of ~ angles

Answer 10

If 2 angles are comps of ~ angles, then the two are congruent
(Congruent complements theorem)