# INSCRIBED ANGLES WORKSHEET

Inscribed Angles Worksheet :

Worksheet given in this section will be much useful for the students who would like to practice problems on inscribed angles in a circle.

Before look at the worksheet, if you would like to know the stuff related to inscribed angles in a circle,

## Inscribed Angles Worksheet - Problems

Problem 1 :

Find the measure of the blue arc.

Problem 2 :

Find the measure of the blue arc.

Problem 3 :

Find the measure of the blue angle.

Problem 4 :

Find mACB, mADB, and mAEB in the diagram shown below.

Problem 5 :

In the diagram shown below, it is given that mE = 75°.  What is mF ?

Problem 6 :

When we go to the movies, we may want to be close to the movie screen, but we don’t want to have to move our eyes too much to see the edges of the picture.

In the diagram shown below, if E and G are the ends of the screen  and we are at F, mEFG is called our viewing angle.

## Inscribed Angles Worksheet - Solutions

Problem 1 :

Find the measure of the blue arc.

Solution :

m∠arc QTS  =  2 ⋅ mQRS  =  2 ⋅ 90°  =  180°

Problem 2 :

Find the measure of the blue arc.

Solution :

m∠arc ZWX  =  2 ⋅ m∠ZYX  =  2 ⋅ 115°  =  230°

Problem 3 :

Find the measure of the blue angle.

Solution :

m∠NMP  =  1/2 ⋅ m∠arc NP  =  1/2 ⋅ 100°  =  50°

Problem 4 :

Find mACB, mADB, and mAEB in the diagram shown below.

Solution :

In the diagram shown above, the inscribed angles mACB, mADB, and mAEB intercept the same arc AB.

So, the measure of each angle is half the measure of arc AB.

That is,

m∠arc AB  =  60°

So the measure of each angle is 30°.

That is,

mACB  =  mADB  =  mAEB  =  60°

Problem 5 :

In the diagram shown below, it is given that mE = 75°.  What is mF ?

Solution :

m∠E and mF both intercept arc GH, so    F.

So, we have

mF  =  mE  =  75°

Problem 6 :

When we go to the movies, we may want to be close to the movie screen, but we don’t want to have to move our eyes too much to see the edges of the picture.

In the diagram shown below, if E and G are the ends of the screen  and we are at F, mEFG is called our viewing angle.

We decide that the middle of the sixth row has the best viewing angle.  If someone is sitting there, where else can we sit to have the same viewing angle ?

Solution :

Draw the circle that is determined by the endpoints of the screen and the sixth row center seat. Any other location on the circle will have the same viewing angle as shown below.

After having gone through the stuff given above, we hope that the students would have understood how to solve problems on inscribed angles.

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