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Lesson 1 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?

360°

0°

180°

90°

Which of the 3 postulates is being used here?

angle

segment

point

What do you call it when you replace items?

simplify

addition property

subtraction property

substitution

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

Division property

Subtraction property

Simplify

Addition property

Which of the 3 postulates is being used here?

Segment

Angle

Ray

What kind of point is L

Collinear

Midpoint

Line segment

Endpoint

Check the last two steps

Symmetric

Reflexion

Substitution

180

90

60

120

Supplementary angles (linear pair)

Complementary angles

Vertical angles

Congruent angles

Addition Prop.

Subtraction Prop.

Simplify or combining like terms

Division Prop

Distributive Prop

Additon Prop

Subtraction Prop

Angle that  =90

Right angle

Ray

Obtuse angle

Straight angle

Segment

Ray

Angle 

Line

Cuts in half (bisects)

Complementary Angles

Supplementary Angles

Angle bisector

Segment Bisector

Look at the box symbol in the picture

∠ABD

∠DBC

∠ABC

We replaced <ABD with a number

Given

Simplify

Substitution

Angle

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?

Subtraction Property

Addition property

Division property

Multiplication Property