Angles - Formed when two rays share a common endpoint. Adjacent Angles – Angles that share a vertex, one side and no interior points. Vertical Angles – Pairs of angles formed where two lines intersect. These angles are formed by rays pointing in opposite directions. .

Angles - Formed when two rays share a common endpoint

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Angles- Formed when two rays share a common endpoint

Adjacent Angles – Angles that share a vertex, one side and no interior points.

Vertical Angles – Pairs of angles formed where two lines intersect. These angles are formed by rays pointing in opposite directions.

Complementary Angles – A pair of angles whose measures sum to 90 degrees. Each angle in the pair is the other’s complement.

Acute angle – An angle whose measure is less than 90 degrees

Obtuse Angle – An angle whose measure is greater than 90 degrees.

Can you describe this angle?

Obtuse Angle

Acute Angle

Complementary Angles

Vertical Angles

Adjacent Angles

Quiz Question 1

C

A

E

D

B

Angles AEB and CED are ________________

Quiz Question 2

C

A

B

Angle ABC is a/an _______________ angle.

Quiz Question 3

A

C

B

D

Angles ABC and CBD are ________________ angles.

Quiz Question 4

C

D

50

40

A

B

Angles ABD and CBD are ______________ angles

Quiz Question 5

C

B

A

D

Angle ADC is a/an ______________ angle

Your Assignment

Due tomorrow –20 points

Choose one of the 5 terms. Create on notebook paper or any 8 ½ by 11 inch piece of paper a poster. On this poster must be the name, its definition, and a visual representation. Your name must be written on the front of the poster.

Your poster will be evaluated on the following basis: