GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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240
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90
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360
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180Why do the three angles of a triangle add up to 180?Do all 3 angles of a triangle add up to 360?What is the sum of 3 angles of a triangle?What angles add to 180 degrees?Do all triangles add up to 180?How do you prove that 3 angles are sum of 180 degrees?
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Detailed explanation-1: -The three interior angles of a triangle will always have a sum of 180°. A triangle cannot have an individual angle measure of 180°, because then the other two angles would not exist (180°+0°+0°).
Detailed explanation-2: -A triangle’s angles add up to 180 degrees because one exterior angle is equal to the sum of the other two angles in the triangle. In other words, the other two angles in the triangle (the ones that add up to form the exterior angle) must combine with the third angle to make a 180 angle.
Detailed explanation-3: -Angles on a straight line equal 180 degrees. Adding the three exterior angles or multiplying 120 by three gives us 360 degrees. Therefore, the sum of the measures of the exterior angles of an equilateral triangle are 360 degrees. This fact is also true for any triangle.
Detailed explanation-4: -Angles in a triangle sum to 180° proof.
Detailed explanation-5: -Supplementary angles are two angles with a sum of 18 0 ∘ 180 ^