Solving Unknown Angles

Finding Unknown Angle Measurements.

Multiple Select

Review: What is the type of angle and its measurement?

• 70*

• 110*

• acute

• obtuse

Multiple Choice

Review: What is the measurement of angle IJL?

• 60*

• 90*

• 150*

• 150

Try It:

A door gets stuck open at 85*. Randy pushes the door, and it opens some more. The door open 100* in all. How many more degrees did the door open after Randy pushed on the door?

Open Ended

Compare your answer and strategy to this picture it strategy. What is similar? What is different?

Draw

Write a sentence that describes how the unknown angle measure is related to the 85* and the 100* angles.

Poll

Would you use addition or subtraction for the Try It word problem. Pick you answer and tell one person at your table why.

• Addition

• Subtraction

Open Ended

Explain why you use subtraction to find the missing measurement.

Draw

Solve for the missing angle. Show your work.

Fill in the Blanks

A snake's mouth can open to 180* and partly close to 60*. What is the difference between the snake's open mouth and partly closed mouth?

Multiple Choice

Answer the picture question.

• 49*

• 131*

• 91*

• 87*

Draw

Answer the question.

Match

Match the following

• 1 Second

• 2 Seconds

• 3 Seconds

• 4 Seconds

• 5 Seconds

36*

72*

108*

144*

180*

• 36*

• 72*

• 108*

• 144*

• 180*

Dropdown

The measurement of the unknown angle is​

Select answer

​ ​

Select answer

​

Select answer

Fill in the Blanks

What is the measurement of the missing angle?

Review Problems:

Multiple Choice

How many pieces of string were used in the project?

• 7

• 5

• 8

• /8

Match

Match the following sums.

• 4/10 + 3/100

• 40/100 + 5/10

• 1/10 + 8/100

• 4/10 + 2/100

• 1/10 + 77/100

43/100

90/100

18/100

42/100

87/100

• 43/100

• 90/100

• 18/100

• 42/100

• 87/100

Multiple Choice

Which one of the following answers is NOT an answer that would be in the area model?

• 1,000

• 10,000

• 4,500

• 300

• 15

Fill in the Blanks

What is the measurement of angle BCE?