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Worksheet: Identifying Isosceles Triangles to Find a Missing Angle or Side Length
Q1:
Find .
- A
- B
- C
- D
Q3:
Find .
- A
- B
- C
- D
Q4:
Find .
Q5:
Find and .
- A ,
- B ,
- C ,
- D ,
Q6:
Triangle is isosceles, with . Determine the sizes of and .
- A ,
- B ,
- C ,
- D ,
Q7:
Given that , , and , find the length of .
- A 12 cm
- B cm
- C 21 cm
- D cm
Q8:
Which pair of segments have the same length?
- A ,
- B ,
- C ,
Q9:
In the figure, given that and , find .
- A
- B
- C
- D
- E
Q10:
Find the value of .
Q11:
In the figure below, given that , , and , find .
- A
- B
- C
- D
Q12:
In the displayed model of a house, what angle does the roof make with the horizontal, given that is isosceles?
Q13:
Find the value of in the figure below.
Q14:
Given that and , find the sizes of the angles of .
- A , ,
- B , ,
- C , ,
Q15:
Given that , use the information in the figure to find the perimeter of triangle .
Q16:
Given that , , and , find the value of .
Q17:
In the following figure, find the value of .
Q18:
If is isosceles, where , , , and , find the length of each side.
- A , ,
- B , ,
- C , ,
- D , ,
- E , ,
Q19:
Find the values of and .
- A ,
- B ,
- C ,
- D ,
- E ,
Q20:
Given that , find the value of .
- A
- B
- C
- D
Q22:
Find the values of and .
- A ,
- B ,
- C ,
- D ,
- E ,
Q23:
Find all possible values of .
- A or
- B or
- C or
- D or
- E or
Q24:
In the figure, determine all possible values of .
- A or
- B or
- C or
- D or
- E or
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