Angles in a triangle

Angles in a triangle add to ....

• 180^o ☺☺☺

• 90^o

• 360^o

• 720^o

To work out x, you need to do 78^o + 66^o = 144^o. Then what...

• 180^o - 144^o = 36^o ☺☺☺

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Find the measure of the indicated angle. 

• 26
• 36
• 85
• 144

Tags

CCSS.8.G.A.5

Find the measure of each angle indicated. 

• 139°
• 66°
• 138°
• 116°

Tags

CCSS.8.G.A.5

Find the measure of the missing angle.

• 8^o
• 58^o
• 122^o
• 64^o

Tags

CCSS.8.G.A.5

Find the measure of the missing angle.

• 90^o

• 10⁰

• 130^o

• 50^o

Tags

CCSS.7.G.B.5

Find the missing angle.

• 29° 
• 39° 
• 49° 
• 59° 

Tags

CCSS.7.G.B.5

Find the measure of angle D.

• 140 degrees
• 16 degrees
• 40 degrees
• 90 degrees

Tags

CCSS.7.G.B.5

Before you can work out missing angle S, you must first work out angle T inside the triangle.

• Angle T is 180^o - 120^o = 60^o because angle on a straight line

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• A
• B
• C
• D

Tags

CCSS.7.G.B.5