In various astrology charts, you have the houses. There are 12 houses, each ruling different parts of your life, and you can split the houses up by house type. Houses of the same house type have similar energy (just like with the zodiac signs and elements). The 3 house types are angular, succedent, and cadent. The one with the most natal planets in your natal chart is your dominant house type.
The angular houses (1st, 4th, 7th, 10th houses) are the ones linked to action. They connect with the cardinal signs in astrology (Aries, Cancer, Libra, Capricorn), which are the action signs, the ones who take the lead. When your dominant house type is angular, you may be looked at to take the reins in situations, more willing to take initiative, and are more likely to speed things up.
The succedent houses (2nd, 5th, 8th, 11th houses) are the ones linked to grounding. They connect with the fixed signs in astrology (Taurus, Leo, Scorpio, Aquarius), which are the grounded, stable signs. When your dominant house type is succedent, you may take more time, exercise greater caution, build on what has come before, and stay with things to the very end.
The cadent houses (3rd, 6th, 9th, 12th houses) are the ones linked to fluidity. They connect with the mutable signs in astrology (Gemini, Virgo, Sagittarius, Pisces), which are full of fluid movement. When your dominant house type is cadent, you may ebb and flow with life, are constantly active, and can be highly flexible/adaptable.
There may be times when you have the same amount of planets in two house types; one may stand out depending on the planets involved and if you have a dominant quality; this also means one of your house types is empty, and you may struggle at times with using the energy of that house type yourself.
P.S. If you want to explore the angles more deeply, the course Astrology Angles Decoded will be available Wednesday! It focuses specifically on the angles, and has been expanded a little to include some info about the other pairs of houses. If you have no interest, just click HERE to be opted out, but still get the regular newsletter; if you already got it, you'll be sent the updated version on Wednesday. In the meantime, check out Get Started With Predictive Astrology if you want to dive into the predictive stuff, or the Soul Astrology Masterclass if you want to focus on understanding yourself and growing.