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ARE YOU GOOD AT GEOMETRY??? STEP RIGHT UP AND ANSWER THIS QUESTION!!
ALL HELP IS APPRECIATED!!!

ARE YOU GOOD AT GEOMETRY STEP RIGHT UP AND ANSWER THIS QUESTION ALL HELP IS APPRECIATED class=

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osikbro

Answer:

130°

Step-by-step explanation:

Since triangle ABC is isosceles, angles A and C are equal. From this we can deduce that they are both (180-80)/2=50 degrees. Since ACD is a straight line, it has an angle of 180 degrees. Subtracting the 50 degrees in angle C, we get that angle DCB=130 degrees.

k41ina

Answer:

130 degrees

Step-by-step explanation:

We know that the triangle is isosceles, so the two base angles will be equal. We will call the base angles "x." There are also 180 degrees in a triangle, so we can write this equation:

80 + 2x = 180

2x = 100

x = 50

Now we know that both base angles are 50 degrees. A straight line is 180 degrees, so to find angle DCB, we have to subtract angle C from 180.

180 - 50 = 130

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