Answer the following statement(s) true (T) or false (F)

Question

1. If triangle ABC and triangle DEF are both 30°-60° triangles, then AB must be congruent to DE
2. An angle of degree measure 180° is a reflex angle.
3. Postulates are statements we assume to be true without proof.
4. Any three points are contained in exactly one plane.
5. A right triangle has two acute angles.

Answer 1

1. False:The triangles may be different sizes and AB and DE may be different lengths.
2. False: An angle of degree measure 180
is a straight angle while a reflex angle has measure
180° < n < 360°.
3. True
4. False—If the points are collinear they are contained in infinitely many planes.
5. True