Question

Draw a circle with radius 4cm. Draw a triangle with two of its angles 65degree and 78degree and all vertices on the circle

Answer 1

The area of triangle is 180°
Let the other angle be x
65+78+x=180°
143+x=180°
x=180-143
x=37°
HOPE YOU HAVE UNDERSTAND THE QUESTION

Answer 2

circle with radius 4 cm

Step-by-step explanation:

given data

radius  = 4 cm

angle 1 = 65 degree

angle 2 = 78 degree

solution

step (1) now using ruler to set distance from point of compass to the pencil lead at 4 cm

step (2)  draw circle by turning the compass through 360°

step (3) draw a cord

step (4) make angle 65 degree  and 78 degree end of cord

step (5) third remaining angle of triangle is 37°

because we know sum of angle of triangle is 180°

so 65 + 78 + x = 180°

x = 37°

learn more :

draw circle

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