1. The vertical angle of an isosceles triangle is 100°. Find the base angles. 2. Find the length of the diagonal of a rectangle whose sides are 15cm and 8cm.

3. ∆ABC is an isosceles with AB=AC. If LA =70°,What is the measure of angle B

4. The length of two sides of a triangle are
4cm and 6cm. Between what two measures should the length of the third side fall ?

please help_/\_

1) 180 - 100 = 80

80/2 = 40(base angels are equal in an isosceles triangle)

2) phytogoras theorem

= 17 cm

3) is it angle A in the question (LA)

4) question cannot understand

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