Geometry

Question 1

A line

Answer 1

<——->

Question 2

A half line

Answer 2

o———>

Question 3

Line segment

Answer 3

A o———o B

Question 4

Acute angle

Answer 4

Less than 90 degrees

Question 5

Obtuse angle

Answer 5

greater than 90 degrees

Question 6

Reflex angle

Answer 6

Betweeen 180 - 360 degrees

Question 7

Right angle

Answer 7

90 degrees

Question 8

Straight angle

Answer 8

180 degrees

Question 9

Full angle

Answer 9

360 degrees

Question 10

vertically opposite angles

Answer 10

X shape

Question 11

Alternate angles

Answer 11

Z shape

Question 12

Corresponding angles

Answer 12

F shape

Question 13

Interior angles

Answer 13

C shape

Question 14

/c  \   /        \ /A       B\D D =

Answer 14

Exterior angle

Question 15

Properties of Parrallelogram

Answer 15

Opp sides are equal + parrallel
Opp angles are equal
Diagonals bisect each other

Question 16

Congruent triangles

Answer 16

SSS (Side, Side, Side)
SAS (Side, Angle, Side)
ASA (Angle, Side, Angle)
RHS (Right angle, Hypotenuse, Other side)

Question 17

Theorems: Vertically opposite angles are…

Answer 17

Equal in measure

Question 18

Theorems: In an isosceles triangle, thw angles opposite the equal sides are…

Answer 18

Equal

Question 19

Theorems: If a transversal makes equal alternative angles on 2 lines, the lines are…

Answer 19

Parallel

Question 20

Theorems: 2 lines are parallel if the corresponding angles in the transversal are…

Answer 20

Equal

Question 21

Theorems: Each exterior angle is equal to

Answer 21

The sum of the opposite interior angles

Question 22

Theorems: In a parallelogram, opposite sides/angles are

Answer 22

Equal

Question 23

Theorems: The diagonals of a parallelogram…

Answer 23

Bisect each other

Question 24

Theorems: If 2 triangles are similar, their sides are…

Answer 24

Proportional

Question 25

Theorems: Pythagoras’ theorum

Answer 25

Hypotenuse squared = other 2 sides squared

Question 26

Axiom

Answer 26

A statement that we accept without any proof: e.g. There is exactly one line through any two given points

Question 27

theorem

Answer 27

A rule that you can prove by following a certain number of logical steps or using a previous theorem or axiom.
E.g. Pythagoras’ Theorem

Question 28

Proof

Answer 28

a series of logical steps that we use to show a theorem is true

Question 29

Corollary

Answer 29

a statement that follows readily from a
previous theorem

Question 30

Converse

Answer 30

reversing the order of a statement