Geometry Theorems for 1.4-2.4

Angle 1 is a right angle

Angle 1 is congruent to Angle 2

If two angles are right angles, then they are congruent.

Angle 3 is a straight angle. Angle 3 is congruent to Angle 4.

If two angles are straight angles, then they are congruent.

Line A is perp to Line B

If 2 lines, rays, segments intersect to form a right angle, then they are perpendicular.

Angle A is 49 degrees, Angle B is 41 degrees. Angle A is comp to Angle B.

If two angles sum to 90 degrees/ right angle, then they are comp

Angle A is supp to Angle B.

If two angles sum to 180 degrees/ straight angle, then they are supplementary.

Angle 1 + Angle 2 = 180 Degrees

Angle 1 is congruent to Angle 2

If two angles are supp and congruent, then they are right angles.

Angle A is supp to Angle B. Angle C is supp to Angle B.

If angles are supp to the same angle, then they are congruent

Angle A is supp to Angle B.

Angle C is supp to Angle D.

Angle B is congruent to Angle D.

If angles are supp to congruent angles, then they are congruent.

Comps of the same < are congruent

If angles are comp to the same angle, then they are congruent.

Comps of congruent <s are congruent.

If angles are comp to congruent angles, then they are congruent.