1.1 Arthimetic - Angles and Triangles

Question 1

when an angle is specified, where is the vortex always given?

Answer 1

in the middle (example, abc, cba, b is the vortex point or angle)

Question 2

how many radians is there in 360°?

Answer 2

2π or 6.28

Question 3

how do you calculate how many radians there are in an angle that is given in °?

Answer 3

n angle multiplied by 2π or 6.28

Question 4

how many minutes in 60 seconds?

Answer 4

1 minute

Question 5

how many degrees in 60 minutes?

Answer 5

1 degree

Question 6

what is an acute angle?

Answer 6

an angle measuring between 0 and 90 °

Question 7

what is an obtuse angle?

Answer 7

an angle measuring between 90 and 180 °

Question 8

what is a reflex angle?

Answer 8

an angle measuring between 180 and 360 °

Question 9

what is a complementary angle?

Answer 9

the sum of two angles which equal 90 °

Question 10

what is a supplemantary angle?

Answer 10

the sum of two angles which equal 180 °

Question 11

what is the equation of converting ° to radians?

Answer 11

x (π/180)

Question 12

what is the equation of converting radians to ° ?

Answer 12

x (180/π)

Question 13

what are the 3 properties of a triangle?

Answer 13

1. number of sides
2. the interior angles
3. the length of sides

Question 14

what are congruent triangles?

Answer 14

two triangles that are identical in every way (angle and length of sides)

Question 15

what are similar triangles?

Answer 15

two triangles that have the same angles but are of different size

Question 16

what is an equilateral triangle?

Answer 16

a triangle that has 3 sides of equal length and 3 angles that are equal

Question 17

what is an isosceles triangle?

Answer 17

a triangle that has 2 sides of equal length and 2 angles that are equal

Question 18

what is a scalene triangle?

Answer 18

a triangle that has no sides of equal length and no angles the same.