Problem: Tracy Darrell Adkins (born January 13, 1962) is an American country singer and actor. In 1998, Adkins appeared on the PBS music program Austin City Limits (season 23). Adkins made his debut in 1996 with the album Dreamin' Out Loud, released on Capitol Records Nashville. Since then, Adkins has released ten more studio albums and two Greatest Hits compilations.

In 2008, Adkins released the single "Muddy Water," the lead single from X, which was released on November 25. The video for "Muddy Water" has an appearance by fellow Celebrity Apprentice competitor Stephen Baldwin as a man being baptized in a muddy river, and later approaching Adkins as a friend. It reached the Top 30 on the country charts, peaking at number 22. "Marry for Money" and "All I Ask For Anymore" were released as the album's second and third singles, and both peaked at No. 14 on the country charts. In November 2008, Adkins made an appearance at the Macy's' Thanksgiving Day Parade. He rode with his family on the "Jimmy Dean" float and performed his popular song "You're Gonna Miss This". In 2009, Adkins appeared in local Kansas City commercials to advertise season tickets and the 50th season of the National Football League's Kansas City Chiefs. Adkins recorded a duet with country legend Ronnie Milsap called "My First Ride" to benefit fire-fighters and police officers in the U.S. and Canada. Then, after the song's release the label said 'no' to radio stations playing it with no explanation given. Milsap led a protest at Capitol Records to "Free Trace" and allow the song to be played. In November 2009, Adkins embarked on the Shine All Night Tour, a co-headling venture with fellow country artist Martina McBride. Also in 2009, he recorded a duet with Blake Shelton titled "Hillbilly Bone", which was released as the lead-off single from Shelton's upcoming sixth album. On October 18, 2009, Adkins made an appearance on Extreme Makeover: Home Edition to help Ty Pennington and his design team build a new home for the Marshall family.

Did he make any TV or movie appearances?

Answer with quotes: On October 18, 2009, Adkins made an appearance on Extreme Makeover: Home Edition to help Ty Pennington and his design team build a new home for the Marshall family.

Question:
Claudius Ptolemy (; Greek: Klaudios Ptolemaios, Klaudios Ptolemaios [klawdios ptoleme:os]; Latin: Claudius Ptolemaeus; c. AD 100 - c. 170) was a Greco-Roman mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology. He lived in the city of Alexandria in the Roman province of Egypt, wrote in Koine Greek, and held Roman citizenship. The 14th-century astronomer Theodore Meliteniotes gave his birthplace as the prominent Greek city Ptolemais Hermiou
Ptolemy's Almagest is the only surviving comprehensive ancient treatise on astronomy. Babylonian astronomers had developed arithmetical techniques for calculating astronomical phenomena; Greek astronomers such as Hipparchus had produced geometric models for calculating celestial motions. Ptolemy, however, claimed to have derived his geometrical models from selected astronomical observations by his predecessors spanning more than 800 years, though astronomers have for centuries suspected that his models' parameters were adopted independently of observations. Ptolemy presented his astronomical models in convenient tables, which could be used to compute the future or past position of the planets. The Almagest also contains a star catalogue, which is a version of a catalogue created by Hipparchus. Its list of forty-eight constellations is ancestral to the modern system of constellations, but unlike the modern system they did not cover the whole sky (only the sky Hipparchus could see). Across Europe, the Middle East and North Africa in the Medieval period, it was the authoritative text on astronomy, with its author becoming an almost mythical figure, called Ptolemy, King of Alexandria. The Almagest was preserved, like most of extant Classical Greek science, in Arabic manuscripts (hence its familiar name). Because of its reputation, it was widely sought and was translated twice into Latin in the 12th century, once in Sicily and again in Spain. Ptolemy's model, like those of his predecessors, was geocentric and was almost universally accepted until the appearance of simpler heliocentric models during the scientific revolution. His Planetary Hypotheses went beyond the mathematical model of the Almagest to present a physical realization of the universe as a set of nested spheres, in which he used the epicycles of his planetary model to compute the dimensions of the universe. He estimated the Sun was at an average distance of 1,210 Earth radii, while the radius of the sphere of the fixed stars was 20,000 times the radius of the Earth. Ptolemy presented a useful tool for astronomical calculations in his Handy Tables, which tabulated all the data needed to compute the positions of the Sun, Moon and planets, the rising and setting of the stars, and eclipses of the Sun and Moon. Ptolemy's Handy Tables provided the model for later astronomical tables or zijes. In the Phaseis (Risings of the Fixed Stars), Ptolemy gave a parapegma, a star calendar or almanac, based on the hands and disappearances of stars over the course of the solar year.
Answer this question using a quote from the text above:

what geometrical models did he use?

Answer:
Ptolemy presented a useful tool for astronomical calculations in his Handy Tables, which tabulated all the data needed to compute the positions of the Sun, Moon and planets,