Download GeoH Ch 2 PRACTICE Test for Review

GEOMETRY
CHAPT. 2
PRACTICE TEST
Determine if each conjecture is true or false. Explain your answer and give a counter
example for each false conjecture.
1)
Given: AB + BC = AC
Conjecture: AB = BC
Write each statement in if-then form. Identify the hypothesis and conclusion. The write
the converse, inverse and contrapositive of the original if-then statement.
2)
An acute angles has a measure less than 90 degrees
Conditional =
Hypothesis =
Conclusion =
Converse =
Inverse =
Contrapositive =
Determine if a valid conclusion can be reached from the two true statements using the
Law of Detachment or the Law of Syllogism. If a valid conclusion is possible, state it
and the law that it used. If a valid conclusion does not follow, write no conclusion.
4)
a)
b)
If two angles are complementary, then their sum is 90 degrees
If the sum of both angles is 90 degrees, then both angles are acute
5)
a)
b)
If two angles are vertical, then they are congruent.
∠1 and ∠2 are congruent.
Name the property that justifies each statement.
6) If m∠1 = m∠2 then m∠2 = m∠1
7) If m∠1 = 90 and m∠1 = m∠2 , then m∠2 = 90
8) If AB = CD then
1
1
AB = CD
2
2
Determine whether the following statements are always, sometimes, or
never true for problems 9 - 11. Justify all answers!!!
9) There is exactly one plane that contains three points.
10) Two lines can intersect at two points.
11) If two points lie in one plane than all points on that line would lie within the same
plane.
For each problem below, solve for x and each numbered angle.
12)
13)
Complete the proofs below on a separate sheet of paper. Show all steps.
14)
15)