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Answered on 05 Mar Learn Lines and Angles
Sadika
If the complement of an angle is 28°, then the complement of the angle and the angle itself add up to 90°.
Let the angle be x degrees.
So, we have:
x + 28 = 90
Now, let's solve for x:
x = 90 - 28
x = 62
Now, we know that the supplement of an angle is the amount by which the angle needs to be increased to reach 180°.
So, the supplement of the angle is:
180 - x
Substituting the value of x, we get:
180 - 62 = 118
Therefore, the supplement of the angle is 118°.
read lessAnswered on 05 Mar Learn Practical Geometry
Sadika
1. Draw three non-collinear points A, B, and C.
2. Connect these points to form triangle ABC.
3. Draw a line through vertex A parallel to side BC. Let's call this line a'.
4. Draw a line through vertex B parallel to side AC. Let's call this line b'.
5. Draw a line through vertex C parallel to side AB. Let's call this line c'.
Answered on 05 Mar Learn Practical Geometry
Sadika
To draw triangle ABC with side lengths AB = 5.5 cm, BC = 6 cm, and CA = 7 cm, as well as the perpendicular bisector of side BC, follow these steps:
The triangle ABC is now drawn with side lengths AB = 5.5 cm, BC = 6 cm, and CA = 7 cm, and the perpendicular bisector of side BC is also drawn.
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Sadika
Answered on 07 Mar Learn Symmetry
Sadika
For an isosceles triangle, the line of symmetry can also be referred to as the "axis of symmetry." This line divides the triangle into two mirror-image parts, running from the apex (the vertex opposite the base) to the midpoint of the base.
Answered on 07 Mar Learn Symmetry
Sadika
Shapes with no line of symmetry do not divide into two mirror-image halves, regardless of how you try to fold or bisect them. Here are three examples:
Scalene Triangle: A triangle with all sides of different lengths and all angles of different sizes has no line of symmetry because there is no way to divide it into two parts that are mirror images of each other.
Irregular Polygon: An irregular polygon, which does not have equal-length sides or equal angles, typically has no line of symmetry. An example would be a five-sided polygon where no two sides or angles are the same.
Parallelogram (excluding rectangles and rhombuses): A general parallelogram (which is not a rectangle or rhombus) has no lines of symmetry. Its opposite sides are equal in length, and opposite angles are equal, but it does not fold into two parts that are mirror images of each other unless it is a special type like a rectangle or rhombus, which do have lines of symmetry.
These shapes illustrate that symmetry is not a universal characteristic of all geometric figures.
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Affordable fees Flexible Timings Choose between 1-1 and Group class Verified Tutors Answered on 07 Mar Learn Perimeter and Area
Sadika
To find the area of a square with a side length of 16.5 decameters (dam) in square meters:
Area = side^2 = (16.5 dam)^2 = 16.5^2 dam^2 = 272.25 m^2
So, the area of the square is 272.25 square meters.
Answered on 07 Mar Learn Perimeter and Area
Sadika
To find the area of a rectangular field in acres with sides of 200 meters and 125 meters:
Then, we convert the area from square meters to acres. Since 1 acre is equal to 4046.86 square meters:
So, the area of the rectangular field is approximately 6.18 acres.
Answered on 07 Mar Learn Perimeter and Area
Sadika
To find the cost of painting the wall, we first need to calculate the area of the wall excluding the area covered by the door, and then multiply it by the cost per square meter.
Calculate the cost:
So, the cost of painting the wall is Rs 235.
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Affordable fees Flexible Timings Choose between 1-1 and Group class Verified Tutors Answered on 07 Mar Learn Perimeter and Area
Sadika
First, let's find the distance around the field, which is the perimeter of the rectangle:
Perimeter of the rectangle = 2 × (Length + Width) = 2 × (290 m + 210 m) = 2 × 500 m = 1000 m
Now, let's find the time it takes for the girl to go two times around the field:
Distance covered = 2 × Perimeter of the field = 2 × 1000 m = 2000 m
Given that the girl walks at the rate of 1.5 m/sec, we can use the formula:
Time = Distance / Speed
Time = 2000 m / 1.5 m/sec ≈ 1333.33 sec
So, it will take approximately 1333.33 seconds for the girl to go two times around the field.
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