Question

step by step explanation​

Answer 1

Answer:

a) Measure of the angle ABC = 90°

b)Right angled triangle

c) Isosceles triangle

d) equilateral triangle

e)60°

Step-by-step explanation:

(a) In the triangle ABC ,

angle A+B+C =180° { Angle sum property of triangle}

therefore,

50°+B+60°= 180°

110°+B = 180

B = 180°-110°

B= 90° (angle ABC = 90)

(b)The triangle ABC is a right angled triangle (as it forms 90° at B )

(c)The triangle PQR is a isosceles triangle (as it has two equal sides i.e PQ=5cm=PR)

(d) The triangle LMN is an equilateral triangle ( as it has all the three sides equal i.e LM=MN=NL=4cm)

(e) In triangle LMN The measure of angle L is 60°(in an equilateral triangle all angles measure 60°)

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