in figure 8.23 e triangle pqr and triangle sqr are isosceles
1. find angle pqr and angle prq
2. find angle sqr and angle srq
3. find x
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Step-by-step explanation:
it is isosceles triangle
angle Q is equal to angle r
180 - 30 divided by 2
150 divided by 2
Q is equal to r
Q is equals to 75
r is equals to 75
now in triangle qsr
sqr is equals to srq as it is an isosceles triangle
180 - 70 divided / 2
110/2
55 =sqr
x= angle Q minus angle sqr
X is equals to 75 - 55
X equals to 20
hope it helps you
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Answered by
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Answer:
- in triangle PQR , PQ = PR so angle PQR = angle prq PQR + PRQ + QPR = 180 a + a + 30 = 180 2a = 180-30 a = 150/2 a = 75 angle PQR = angle PRQ = 75
- in triangle SQR , SQ = SR so angle SQR = angle SRQ SQR + SRQ + QSR = 180 b + b + 70 = 180 2b = 180 - 70 b = 110/2 b = 55 angle SQR = angle SRQ = 55
- x = angle PQR - angle SQR x = 75 - 55 x = 20
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