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## Missing Angles in Triangles

Measuring angles, 4th -  5th  , parallel lines, parallel lines & transversals, 9th -  10th  .

19 questions

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• Multiple Choice Edit Please save your changes before editing any questions. 2 minutes 1 pt What are vertical angles? Angles that are adjacent to each other Angles that add up to 180° Angles that are opposite of each other when lines intersect Angles that add up to 90°

Find the missing angle.

• Multiple Choice Edit Please save your changes before editing any questions. 1 minute 1 pt Supplementary Angles measure _____ degrees. 180 55 100 90

∠   A H B   a n d   ∠ A H G \angle\ AHB\ and\ \angle AHG ∠   A H B   a n d   ∠ A H G   are considered which of the following?

Vertical Angles

Complementary Angles

Supplementary Angles

∠   A H B   a n d   ∠ A H G \angle\ AHB\ and\ \angle AHG ∠   A H B   a n d   ∠ A H G   are vertical angles ?

∠ E H F   a n d   ∠ D H E \angle EHF\ and\ \angle DHE ∠ E H F   a n d   ∠ D H E   are considered which of the following?

Which of the following statements are true about    ∠ F H G   a n d   ∠ D H F \angle FHG\ and\ \angle DHF ∠ F H G   a n d   ∠ D H F    ?

The two angles are equal because they are vertical angles

The measures of both angles are equal because they are perpendicular adjacent angles and both are right angles.

The angles are not equal because they are both perpendicular adjacent angels

Both angles are complementary angles because when added together they have  a sum of 90 degrees

The sum of the measure of    ∠ B H C   a n d   ∠ C H D \angle BHC\ and\ \angle CHD ∠ B H C   a n d   ∠ C H D    is equal to the measure of    ∠ F H G \angle FHG ∠ F H G

Which of the following statements are true?

∠ A B E a n d ∠ E B C \angle ABE\ and\ \angle EBC\ ∠ A B E a n d ∠ E B C are supplementary angles and will equal 180 ∘ \circ ∘

All three angles in the triangle will equal 180 ∘ \circ ∘

∠ B E C a n d ∠ C E F \angle BEC\ and\ \angle CEF\ ∠ B E C a n d ∠ C E F are supplementary angles and will equal 180 \circ ∘

All of the above

What is the angle measure for angle    ∠ B E C \angle BEC ∠ B E C    ?

25 ∘ \circ ∘

160   \circ ∘

90   \circ ∘

70   ∘ \circ ∘

What is the angle measure for angle ∠ B E C \angle BEC ∠ B E C ?

160 \circ ∘

70 ∘ \circ ∘

2x + 105 - 9x = 90

2x + 105 + 9x = 90

2x + 105 + 9x = 180

9x = 2x + 105

What is the value of x ?

Which of the following statements are true? Choose all that apply.

∠ C F D a n d ∠ A F C \angle CFD\ and\ \angle AFC\ ∠ C F D a n d ∠ A F C are supplementary angles because they add up to equal 180 ° \degree °

∠ C F D a n d ∠ C F B \angle CFD\ and\ \angle CFB ∠ C F D a n d ∠ C F B are complementary angles and are equal to 90 ° \degree °

∠ C F D a n d ∠ A F E \angle CFD\ and\ \ \angle AFE\ ∠ C F D a n d ∠ A F E will be equal because they are vertical angles

∠ C F D a n d ∠ A F B \angle CFD\ and\ \angle AFB\ ∠ C F D a n d ∠ A F B will be equal because they are vertical angles

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