Geometry - Unit 2 Quiz (11/05)

Question 1

segment bisector

Answer 1

A line, ray, or segment that passes through the midpoint of another segment. (Lesson 1.7)

Question 2

angle bisector

Answer 2

A line, segment, or ray that divides an angle into two congruent angles (two angles with the same measure).(Lesson 1.7)

Question 3

perpendicular

Answer 3

Any two lines, segments, or rays that intersect to form strictly or right angles. (Lesson 1.7)

Question 4

perpendicular bisector

Answer 4

A line, ray, or segment that passes through the midpoint of another segment and makes only right angles with it.

Question 5

median of a triangle

Answer 5

A line segment drawn from the vertex of a triangle to the midpoint of the opposite side. (Lesson 2.1)

Question 6

altitude of a triangle

Answer 6

A line segment drawn from the vertex of a triangle such that it is perpendicular to the opposite side. (Lesson 2.1)

Question 7

Addition Property of Equality

Answer 7

“If a = b, then a+c = b+c.” - if we add or subtract the same number to both sides of an equation, the sides remain equal. (Lesson 2.2)

Question 8

Reflexive Property of Equality

Answer 8

“a = a, 3 =3” - a number is always equal to itself. (Lesson 2.2) (*Think about a REFLECTION – like looking into a mirror!)

Question 9

Substitution axiom

Answer 9

Quantities equal to each other may be substituted (replaced) for each other. (Lesson 2.2)

Question 10

Addition axiom

Answer 10

If equals are added to equals, the sum is equal. (Lesson 2.2)

Question 11

Subtraction axiom

Answer 11

If equals are subtracted from equals, the difference is equal. (Lesson 2.2)

Question 12

SSS Theorem

Answer 12

If three sides of one triangle are the same length as three sides of another triangle, then these two triangles are congruent (identical in size and shape). (Lesson 2.3)

Question 13

ASA Theorem

Answer 13

Two triangles are congruent if a side and the adjacent angles of one are equal (or congruent), respectively, to a side and the adjacent angles of the other. (Lesson 2.3)

Question 14

SAS Theorem

Answer 14

Two triangles are congruent if two sides and the included angle of one are equal (or congruent) to two sides and the included angle of the other. (Lesson 2.3)

Question 15

CPCTC

Answer 15

Congruent Parts of Congruent Triangles are Congruent - This is the simple idea that if two triangles are proven congruent, then corresponding parts (sides and angles) of those triangles must also be congruent (or equal in measure). (Lesson 2.4)

Question 16

vertical angles

Answer 16

Vertical angles are angles that are opposite one another when lines intersect (cross). (Lesson 1.4)

Question 17

same-side exterior angle pairs

Answer 17

Each pair of exterior angles are outside the parallel lines and on the same side of the transversal. Their measurements are supplementary (added together, they equal 180 degrees). (Lesson 2.6)

Question 18

same-side interior angle pairs

Answer 18

Same side interior angles are two angles that are on the same side of the transversal and on the interior of (between) the two lines. (Lesson 2.6)

Question 19

alternate exterior angle pairs

Answer 19

the pair of angles that lie on the outer side of the two parallel lines, but on the opposite side of the transversal line. (Lesson 2.6)

Question 20

alternate interior angle pairs

Answer 20

a pair of angles on the inner side of each of those two lines but on opposite sides of the transversal. (Lesson 2.6)

Question 21

corresponding angles

Answer 21

When two lines are crossed by another line (the transversal), the angles in matching corners are called corresponding angles. (Lesson 2.6)