2 years ago

This drawing shows an isosceles triangle work out the size of angle a plz help as soon as possible thks

Mathematics

2 answers:

makkiz [27]2 years ago

3 0

Answer:

70°

Step-by-step explanation:

Size of angle a = (180°-40°) ÷ 2 (angle sum of triangle; base angles of isos triangle)

= 140° ÷ 2

= 70°

Pie2 years ago

3 0

Answer:

a + 40° = 180°

a t40°-40° =180°- 40°

a = 140°

Step-by-step explanation:

isosceles add up to 180°

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