Question

Activity to show 3 angles lie on straight line and sum of angles of triangle is 180

Answer 1

see attachment straight line is 180°
2x+90°+3x=180
5x+90°=180°
5x=180°-90°
5x=90°
x=90°/5
x=18°

angles are 2x=36°, 3x=54°, 90°

Answer 2

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