Very easy
Solve for a.

ΔACD have AC=AD ⇒ ΔACD is a isosceles triangle

⇒ ∠ACD = ∠ADC = 67° ⇒ a° = 67°

ΔABD is a square triangle

⇒ ∠ABD = 90° - ∠ADC = 90° - 67° = 23° ⇒ b° = 23°

ok done. Thank to me :>

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

1     sepan

2     encuentren

3     tenga

4     hable

5   parezca

6   llegue