Solve the following:
(20
31. Find 577 - (228) - (-325).
32. Find the sum of (-50), (-200) and 300.
33. Find 23498-72526.
34 a. Which number will we reach if we move 4 numbers to the right of (-2)?
b. Which number will we reach if we move 5 numbers to the left of 1?
35. Find (-117) + (-1117) + (-11117)
36. Find the sum of 3225 + 1225 - 2826
37. What are 3 types of triangles based on sides and explain?
38. What are 3 types of triangles based on angles and explain?
39. Name the two diagonals and four angles
Answers
Step-by-step explanation:
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HERE IS Ur ANSWER
31) 577-228+325
= 577+325-228
=902-228
=674
32) sum of -50, -200, 300
=-50-200+300
=-250+300
=50
33) 23498-72526
=-49028
34) Answer will be 2
35) -117-1117-11117
=-12351
36) 3225+1225-2826
=4450-2826
=1624
37) Triangles can be classified according to the lengths of their sides:
•An equilateral triangle has three sides of the same length. An equilateral triangle is also a regular polygon with all angles measuring 60°.
•An isosceles triangle has two sides of equal length. ...
•A scalene triangle has all its sides of different lengths.
38) An equilateral triangle has three equal sides and angles. It will always have angles of 60° in each corner.
•An isosceles triangle can be drawn in many different ways. It can be drawn to have two equal sides and two equal angles or with two acute angles and one obtuse angle.
•A right-angled triangle has one 90° angle.
•A scalene triangle has three different angles and none of its sides are equal in length.
•An obtuse triangle has three different angles, with one angle greater than 90°. None of its sides are equal in length.
39) PROPERTIES OF RHOMBUS
•It follows that any rhombus has the following properties:
•Opposite angles of a rhombus have equal measure. •The two diagonals of a rhombus are perpendicular; that is, a rhombus is an orthodiagonal quadrilateral.
• Its diagonals bisect opposite angles.
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Answer:
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Step-by-step explanation:
31. 577 - (228) - (-325)
= 577 - 228 + 325 ( - × - = + )
= 577 - 553
= 24
32. ADD ALL
= (-50) + (-200) + 300
= -50 - 200 + 300 ( + × - = - )
= 250 + 300
= 550
33. 23498 - 72526
= - 49028 ( greater no. sign )
34.
(a) -2 to -1 to 0 to +1 to +2
we reach +2
(b) 1 to 0 to -1 to -2 to -3 to -4
we reach -4
35. (-117) + ( -1117) + ( -11117)
= - 117 - 1117 - 11117
= - 1234 - 11117
= - 12351
36. 3225 + 1225 - 2826
here , remember BODMAS
(Brackets Out Division Multiplication Addition Subtraction)
= 4450 - 2826
= 1624
37. THREE TYPES OF TRIANGLE BASED ON THEIR SIDES
1. EQUILATERAL triangle - all sides are equal
2. SCALENE triangle - all sides are NOT equal
3. ISOSCELES triangle - 2 sides i.e. opposite sides are equal .
38. THREE TYPES OF TRIANGLE BASED ON ANGLE
1. ACUTE angle
2.OBTUSE angle
3. RIGHT angle
39. 2 TYPES OF DIAGONALS :
INTERSECTING diagonals
PARALLELS diagonals
4 ANGLES :
ACUTE ANGLE
RIGHT ANGLE
OBTUSE ANGLE
REFLEX ANGLE.