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Lesson 8 Angle proofs

Last updated almost 2 years ago

23 questions

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Question 1

1.

Question 2

2.

Question 3

3.

What number can you substitute in this blank to tell me what ∠NOP equals?

Question 4

4.

How many degrees is a line?

Question 5

5.

Question 6

6.

Question 7

7.

Question 8

8.

Question 9

9.

Question 10

10.

Question 11

11.

Question 12

12.

Question 13

13.

Question 14

14.

How many degrees? (the box)

Question 15

15.

Question 16

16.

Question 17

17.

Question 18

18.

Question 19

19.

What property did we use to get to this step? how did we get 45? look above (2<ABD = 90)

Question 20

20.

Question 21

21.

What number can we substitute in for ∠FIG?

Question 22

22.

Question 23

23.

Because MON are collinear how many degrees does that measure?

180°

0°

360°

90°

Which of the 3 postulates is being used here?

point

segment

angle

What do you call it when you replace items?

addition property

subtraction property

substitution

simplify

Did the 180 increase or decrease? or What did we do to get <MOP=40

Simplify

Addition property

Subtraction property

Division property

Which of the 3 postulates is being used here?

Angle

Segment

Ray

What kind of point is L

Collinear

Line segment

Midpoint

Endpoint

Check the last two steps

Substitution

Symmetric

Reflexion

180

90

60

120

Complementary angles

Congruent angles

Supplementary angles (linear pair)

Vertical angles

Subtraction Prop.

Addition Prop.

Simplify or combining like terms

Additon Prop

Subtraction Prop

Division Prop

Distributive Prop

Angle that  =90

Ray

Straight angle

Right angle

Obtuse angle

Segment

Ray

Angle 

Line

Cuts in half (bisects)

Complementary Angles

Angle bisector

Segment Bisector

Supplementary Angles

Look at the box symbol in the picture

∠ABD

∠DBC

∠ABC

We replaced <ABD with a number

Angle

Given

Simplify

Substitution

Same as replace

Subtraction Property

Addition Property

Simplify

Substitution

180 becomes 135, because what operation we did with 45 to move it to the other side?

Division property

Multiplication Property

Subtraction Property

Addition property