Chapter 4

Question 0

Third angles theorem

Answer 0

If two angles of one triangle are congruent to two angles of a second triangle, then the third angles are also congruent

Question 1

Congruent triangles

Answer 1

When there is a correspondence between their angles and sides such that corresponding angles are congruent and corresponding sides are congruent

Question 2

Exterior angles theorem

Answer 2

The measure of an exterior angle of a triangle is equal to the sum of the measures of the two remote interior angles

Question 3

Exterior angle inequality theorem

Answer 3

The measure of an exterior angle of a triangle is greater than the measure of either of the two remote interior angles

Question 4

Base angles theorem

Answer 4

If two sides of a triangle are congruent, then the angles opposite the two sides are also congruent

Question 5

If two angles of a triangle are congruent…

Answer 5

Then the sides opposite them are congruent

Question 6

If a triangle is equiangular…

Answer 6

Then it is also equilateral

Question 7

Hypotenuse leg congruence theorem

Answer 7

If the hypotenuse and leg of a right triangle are congruent to the hypotenuse and leg of a second right triangle, then the two triangles are congruent