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CPM eBooks ­ CC Integrated II
2­27. See below:
a. Converse: If the ground is wet, then it is raining. Not true.
b. Converse: If a polygon is a rectangle, then it is a square. Not true.
c. Converse: If a polygon has four 90° angles, then it is a rectangle. Not true, it could have more than
four angles.
d. Converse: If a polygon is a triangle, then it has three angles. True.
e. Converse: If vertical angles are congruent, then two lines intersect. True.
2­28. See below:
a. 110°
b. 70° c. 48° d. 108°
2­29. See below:
b. The measure of an exterior angle of a triangle equals the sum of the measures of its remote interior
angles.
c. See sample flowchart below.
2­30. See below:
a. (–2, 3) b. (–2, 3); yes
2­31. See below:
a. congruent (HL ≅ or SAS ≅)
b. congruent (AAS ≅)
c. not necessarily congruent
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d. congruent (SAS ≅)
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