Unit 2 Review

Unit 2 Review

Good morning! For today's warmup, please login to the google classroom and open the 'Write your own quiz question' google slide. You have until 9:40 to write a quiz question and it's answer using the image and vocab words provided. The 5 best questions (with correct answers) will earn a h/w pass.

Let's do a quick review on:

• Complementary, supplementary, adjacent and vertical angles

• https://www.youtube.com/watch?v=JPjQaELCdC0&ab_channel=GwenHauk

Fill in the Blank

Supplementary angles always add up to

Multiple Choice

What is the measure of angle x equal to in degrees?

• x = 118

• x = 108

• x = 28

• x = 58

Multiple Choice

Which of the following is NOT an example of supplementary angles?

•  $\angle7\ and\ \angle8$  

•  $\angle2\ and\ \angle3$  

•  $\angle1\ and\ \angle7$  

•  $\angle6\ and\ \angle4$  

Fill in the Blank

Complementary angles always add up to

Multiple Choice

Find the missing angle.

• 60°
• 70°
• 50°
• 140

Multiple Choice

Which angle is complementary to  $\angle LJM$  

•  $\angle MJN$  

•  $\angle NJP$  

•  $\angle FGE$  

•  $\angle LJK$  

Multiple Choice

Which angle is a vertical angle to with $\angle7$  ?

•  $\angle1$  

•  $\angle5$  

•  $\angle3$  

•  $\angle6$  

•  $\angle9$  

Multiple Choice

Which angles are vertical angles?

• $\angle8\ \&\ \angle7$

• $\angle8\ \&\ \angle6$

• $\angle8\ \&\ \angle5$

Multiple Choice

What type of angles are these?

• Adjacent Angles

• Linear Pair

• Complementary Angles

• Supplementary Angles

• Vertical Angles

Multiple Select

Which angles are non-adjacent with $\angle8$  ?
 (mark all that apply)

•  $\angle2$  

•  $\angle3$  

•  $\angle4$  

•  $\angle5$  

•  $\angle1$  

Now let's review how to calculate these angles:

Remember, if you know what 2 angles add up to, you can calculate the missing angle by subtraction.

Look at angle C and angle 3.

They form a straight angle (a line). They add up to 180 degrees. If angle C = 110°, what is angle 3 equal to?

Look at angle C and angle 3.

They form a straight angle (a line). They add up to 180 degrees. If angle C = 110°, what is angle 3 equal to? 180° - 110° = 70°. You can do a quick check by adding angles C and 3, 110° + 70° = 180°

Multiple Choice

If the $m\angle9=\ 48\degree$  , what is the  $m\angle10?$  

•  $48\degree$  

•  $96\degree$  

•  $132\degree$  

•  $32\degree$  

Multiple Choice

What is the sum of  $m\angle9+m\angle10=$  

•  $90\degree$  

•  $180\degree$  

•  $360\degree$  

•  $45\degree$  

Look at these 2 angles.

They form a 90° angle when we add them up. 25° + 65° = 90°

Look at these 2 angles.

What is x equal to for these 2 angles?

Look at these 2 angles.

What is x equal to for these 2 angles? x is equal to 90° - 73° = 17°. You can check by adding the 2 angles: 73° + 17° = 90°

Multiple Choice

Find the missing angle.

• 74
• 66
• 35
• 16

Let's calculate more complex angles.

Both angles add up to 90°, so we can write the equation

2x + x = 90° Now solve for x.

a. Combine like terms

3x = 90

b. Divide by 3 on both sides

x = 30

So angle 2x = 2(30) = 60°

Angle x = 30°

Angle 2x + x = 60°+30° = 90°

Multiple Choice

Find the value of x.

• 15
• 16
• 18
• 19

Multiple Choice

Tell whether the angles are complementary or supplementary. Then find the value of x.

• Complementary; x=25
• Complementary; x=5
• Supplementary; x=25
• Supplementary; x=5

Multiple Choice

Solve for x

• 5
• 90
• 25
• 10