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Lesson 3 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°

90°

180°

0°

Which of the 3 postulates is being used here?

segment

angle

point

What do you call it when you replace items?

simplify

subtraction property

addition property

substitution

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

Simplify

Division property

Subtraction property

Addition property

Which of the 3 postulates is being used here?

Segment

Angle

Ray

What kind of point is L

Endpoint

Midpoint

Line segment

Collinear

Check the last two steps

Symmetric

Substitution

Reflexion

180

90

60

120

Vertical angles

Congruent angles

Supplementary angles (linear pair)

Complementary angles

Addition Prop.

Simplify or combining like terms

Subtraction Prop.

Division Prop

Distributive Prop

Additon Prop

Subtraction Prop

Angle that  =90

Ray

Obtuse angle

Straight angle

Right angle

Line

Ray

Segment

Angle 

Cuts in half (bisects)

Supplementary Angles

Angle bisector

Complementary Angles

Segment Bisector

Look at the box symbol in the picture

∠ABD

∠DBC

∠ABC

We replaced <ABD with a number

Simplify

Angle

Given

Substitution

Same as replace

Addition Property

Substitution

Subtraction Property

Simplify

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

Addition property

Division property

Multiplication Property

Subtraction Property