Geometry

Question 1

What are all of the 8 reasonings?

Answer 1

1. adj. ∠s on a st. line
2. ∠s on a st. line
3. corr. ∠s, AB // CD
4. int ∠s, AB // CD
5. alt. ∠s, AB // CD
6. vert opp ∠s
7. ∠ sum of ^
8. Ext ∠= Sum of 2 int. opp ∠s

Question 2

What are all 4 angles?

Answer 2

1. Acute Angle: Between 0 and 90 degrees
2. Obtuse Angle: Between 90 and 180 degrees
3. Right Angle: c = 90 degrees
4. Reflex Angle: Between 180 and 360 degrees

Question 3

What are all 8 polygons?

Answer 3

1. Triangle
2. Quadrilateral
3. Pentagon
4. Hexagon
5. Heptagon
6. Octagon
7. Nonagon
8. Decagon

Question 4

What is the formula to solve the the sum of interior angles of an n-sided polygon?

Answer 4

(n - 2) x 180 degrees

Question 5

What is the formula to solve each interior angle of an n-sided polygon?

Answer 5

(n - 2) x 180/ n degrees

Question 6

What is the sum of all ext. ∠s of a polygon?

Answer 6

360 degrees

Question 7

What is the formula to get one ext.∠ ?

Answer 7

360 / n

Question 8

Number of sides of a polygon?

Answer 8

360 / 1 ext.∠

Question 9

What is the unit of area of 1 cm square?

Answer 9

10mm x 10mm = 100mm square

Question 10

What is the unit of area of 1 m square?

Answer 10

100 cm x 100 cm = 10 000 cm square

Question 11

What is the unit of area of 1 ha?

Answer 11

10 000 m square

Question 12

What is the unit area of 1 km square?

Answer 12

1000m x 1000 m = 1 000 000 m square = 100 ha

Question 13

What is the formula to find the area of a trapezium?

Answer 13

0.5 x h x (1st + 2nd Length)

Question 14

What are the units of volume?

Answer 14

1. 1 ml = 1 cubic centimetre
2. 1 ml = 1000 cubic centimetre
3. 1 kilolitre = 1 000 000 cubic centimetre

Question 15

What is the formula to find the volume of a cylinder?

Answer 15

Base Area x H

Question 16

What are the formulas to find the surface areas of cylinders and right prisms?

Answer 16

Right Prism = (2 x BA) + (H x BP)

Cylinder = (2 x BA) + (H x BP)

Question 17

How would one find the area of a parallelogram?

Answer 17

Base x Height

Question 18

What is a transversal?

Answer 18

A line that intersects 2 or more lines.

Question 19

What is a perpendicular bisector?

Answer 19

A line which bisects a line segment at a right angle.

Question 20

What is an angle bisector?

Answer 20

A line which bisects an angle into equal angles.

Question 21

What is the feature in the parallelograms, rectangles, rhombus and square that you did not know?

Answer 21

The both parts of the diagonal lines are equal but for the square all of them are equal.

Question 22

What should you remember when finding the perimeter of a quadrant or semicircle?

Answer 22

To calculate the diameter/ radius too!!!

Question 23

How does one find the area of a rhombus?

Answer 23

( 0.5 x Length of one Diagonal ) x Length of other Diagonal OR ( B x H )