Question

ln the adjoining figure,measures of angles angle BAC and angle ACD are indicated. Calculate the measures of the remaining angles. ls ∆ ABC isoceles ? Give reason.​

Answer 1

Answer:

<ACB=180-130=50

<ABC=180-(80+50)=180-130=50

it is a isosceles triangle because two angles and two sides of this triangle are equal

Step-by-step explanation:

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Answer 2

Answer:

STEP 1

By linear pair,

ACD + ACB =180

ACD + 130 =180

ACD =180-130

ACD=50

STEP 2

BY ANGLE SUM PROPERTY,

80+50+ABC=180

130 + ABC=180

ABC=180-130

ABC=50

Step-by-step explanation:

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