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primary 6 | Maths
| Geometry
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Date Posted: 4 years ago
Views: 221
The idea here is to find the missing angles by using the idea that the sum of all angles in a triangle is 180 degrees and all right angles have a value of 90 degrees.
If a triangle contains two angles of the same value, the triangle is isosceles.
If a triangle contains two angles of the same value, the triangle is isosceles.
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3. Sum of angles in a triangle = 180
180-45-90=45
Since there’s are 2 45degree angles, it fits the rule for an isosceles triangle. (Having 2 angles of the same degree)
180-45-90=45
Since there’s are 2 45degree angles, it fits the rule for an isosceles triangle. (Having 2 angles of the same degree)
Could the people who disagrees kindly justify your view? :) would be Glad to learn
1
Why is the answer 1?
The last angle would be 49degrees. Three angles in the triangle are all different angles and doesn’t suit the rules of an isosceles triangle.
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