Parts of a Triangle: Using parallel lines

Classify a triangle by its sides Is it possible...?Using the median to calculate the perimeter Using the theorem: The median of a triangle divides it into two triangles of the same area Median in an isosceles triangle - properties Determine the size of the given angles Identify the greater value Median in a right-angled triangle Using properties of the median Identifying the sides in a triangle using median and height Calculate Angles in Quadrilaterals True / false Identifying sides in a triangle Using angles in a triangle Identifying and defining elements Finding the size of angles in a triangle

Question 1

AB || CD

x = 80

Calculate the size of the $\alpha$ .

Question 2

AB||CD

x = 50

Calculate the size of angle $\alpha$ .

Question 3

AB || CD

Calculate the size of the angle $\alpha$ .

Question 4

AB || CD

Calculate the size of angle $\alpha$ .

Examples with solutions for Parts of a Triangle: Using parallel lines

Exercise #1

AB || CD

x = 80

Calculate the size of the $\alpha$ .

Video Solution

Answer

30

Exercise #2

AB||CD

x = 50

Calculate the size of angle $\alpha$ .

Video Solution

Answer

67

Exercise #3

AB || CD

Calculate the size of the angle $\alpha$ .

Video Solution

Answer

43

Exercise #4

AB || CD

Calculate the size of angle $\alpha$ .

Video Solution

Answer

84