Unit 10

Question 0

Vertex

Answer 0

The middle angle
EX.
Vertex in triangle DYT is Y

Question 1

Triangle

Answer 1

3 sided polygon

Question 2

Line Segments

Answer 2

The sides of a triangle

Question 3

2 classification ways for triangles

Answer 3

Angles and sides

Question 4

4 types of angles

Answer 4

• acute = less than 90
• obtuse = more than 90
• right = exactly 90 (corner)
• straight = exactly 180 (straight line)

Question 5

Ways to classify a triangle by ANGLES

Answer 5

• acute = all acute angles
• obtuse = one obtuse angle
• equilateral = all equal angles
• right = one right angle

Question 6

Ways to classify a triangle by SIDES

Answer 6

• scalene = no equal sides
• isosceles = 2 equal sides
• equilateral = all equal sides

Question 7

Pythagorean Theorem

Answer 7

The theory that if you add up the area of the squares of the legs of a right triangle, you will get the area of the square of the hypotenuse
(a^2 + b^2 = c^2)

Question 8

Sides of a right triangle

Answer 8

Legs are next to the right angle, which form the right angle (a and b)
the Hypotenuse is across from the right angle (c)

Question 9

Adjacent

Answer 9

Next to

Question 10

Polygon

Answer 10

• closed figure
• 3.. line segments
• sides intersect only at end points

Question 11

Non Polygons

Answer 11

• A circle or cone
• a bow tie like figure
• an open figure (the letter Z)

Question 12

Classify Polygons

Answer 12

Triangle 3
Quadrilateral 4
Pentagon 5
Hexagon 6
Heptagon 7
Octagon 8
Nonagon 9
Decagon 10

Question 13

Formula for SUM of all angles

Answer 13

(n-2)180

Question 14

Regular Polygon

Answer 14

A polygon with congruent angles and sides

Question 15

Formula for ONE INDIVIDUAL angle

Answer 15

((n-2)180)/n